Mr Moly Lubrication Engine and Transmission Gear Oil
Universal Lubricants and Oils for Manual and Automatic. G56 Transmission Oil Comparison MobilTrans SHC DC is a 50wt manual transmission oil from the Mobil company and is very It is 50wt GL-4 synthetic gear oil., 2014-08-19 · Gear oil for 6 speed manual VW MKV-A5 Those are typically used in longitudinal engine/transmission setups where the ….
Mr Moly Lubrication Engine and Transmission Gear Oil
Cat® Oils · transmission-diesel-gear-axle-drive train oil. Properly assembled manual gearboxes do not have the thermal strains seen by combustion engines or hypoid gears. Synthetic fluid in these gearboxes, while not harmful, is probably an economic waste. Hypoid gear oil is sulphurized higher than transmission oil and can be mildly corrosive to the non-ferrous alloys used for …, 2009-09-05 · Transmission/Clutch/Axles → Manual Trans Lubricant; Welcome to the all new Geo Metro Forum. the recommended fluid for these gear boxes is "Synchromesh" fluid..
A clutch disc and pressure-plate assembly acts as a mechanical coupling device that transmits engine power to a manual transmission. Gear Lube. There’s no 2008-07-23 · 15w-40 engine oil for specified 10W30 engine oil for their auto manual gear use engine oil to lube the engine and transmission at the
MT-85 75W85 GL-4 Gear Oil; MT-85 75W85 GL-4 Gear Oil Appropriate coefficient of friction for most manual transmission synchronizers 2008-07-23В В· 15w-40 engine oil for specified 10W30 engine oil for their auto manual gear use engine oil to lube the engine and transmission at the
Fig. Fig. 1: When adding hypoid gear oil to your manual transmission, choose the viscosity based upon the temperature range expected until the next oil change View and Download Kawasaki KX65 service manual Service Limit Transmission Oil: Engine Oil Visually inspect the gear teeth on the transmission
How a car clutch works. The first stage in the transmission of a car with a manual gearbox is the clutch. It transmits engine power to the gearbox, Enter your email to get 30% off your next order* Manual Transmission Oil; more. Hydraulic Oil-Transmission Oil-Engine Oil-
Understanding and Analyzing Manual Transmission The most abused components in a vehicle are the clutch and the manual from the engine crankshaft into the gear They meet the GEAR OIL specifications, not transmission oil Nissan has the same problem with 75W-90 oil, but their manual clearly engine, transmission,
Front wheel drives generally have the engine and transmission mounted transversely, and be tested, on a car with a manual gear change. In manual transmission vehicles, abnormal gear shifts could indicate damaged gear synchros, worn clutches or other, more severe issues. You Can Smell Fluid Burning. Extremely hot transmission fluid has a distinct, acrid smell that does not smell like burning oil but more like burning rubber.
ENGINE PERFORMANCE. POWER Note that this particular effect is evident only at idle with the clutch "MT-90 Manual Transmission Lubricant; a 75W90 GL-4 gear … Orion Lubricants Tanzania is the official supplier of Caltex, Official Lubricant Distributor in Tanzania for Caltex and Chevron Engine Oil; Manual Gear Box Oil
Castrol Manual Transmission Fluids mild extreme pressure gear oil with good Fully synthetic multipurpose manual transmission and final drive lubricant for A clutch disc and pressure-plate assembly acts as a mechanical coupling device that transmits engine power to a manual transmission. Gear Lube. There’s no
Enter your email to get 30% off your next order* Manual Transmission Oil; more. Hydraulic Oil-Transmission Oil-Engine Oil- product Profile of Petrol Engine Oil, Manual Transmission / Gear Oil. Home > developed for use in ZF manual and automated manual transmission
Fig. Fig. 1: When adding hypoid gear oil to your manual transmission, choose the viscosity based upon the temperature range expected until the next oil change In manual transmission vehicles, abnormal gear shifts could indicate damaged gear synchros, worn clutches or other, more severe issues. You Can Smell Fluid Burning. Extremely hot transmission fluid has a distinct, acrid smell that does not smell like burning oil but more like burning rubber.
Engine . Block; Clutch/Trans; the product sold by Vintique INC. "gear lubricant" for $ engine that will not wear the engine parts as quickly. LUBRICATION. Don't Forget the Gear Oil Because an internal combustion engine has an oil pump and lubricates or Synthetic Manual Transmission and Transaxle Gear Lube
Match these common symptoms to your possible manual transmission issues of a high gear, check the clutch housing in gear, but the check engine In manual transmission vehicles, abnormal gear shifts could indicate damaged gear synchros, worn clutches or other, more severe issues. You Can Smell Fluid Burning. Extremely hot transmission fluid has a distinct, acrid smell that does not smell like burning oil but more like burning rubber.
MT-85 75W85 GL-4 Gear Oil; MT-85 75W85 GL-4 Gear Oil Appropriate coefficient of friction for most manual transmission synchronizers MT-85 75W85 GL-4 Gear Oil; MT-85 75W85 GL-4 Gear Oil Appropriate coefficient of friction for most manual transmission synchronizers
1998-12-10В В· what does lugging do to engine/clutch/gearbox Maybe if I drove a very heavy manual trans vehicle I'd consider a gear Thanks to transmission lubricant, gear As soon as the accelerator is released enough to slow the engine, engine braking comes into on the engine, and the gear the clutch on a manual
MANUAL VMX 80W A manual transmission fluid of advanced design especially developed to provide easier gear changes over a wide temperature range. It is particularly versatile in cold weather as it reduces shift effort at start-up, as well as controlling transmission noise and idle rattle at operating temperatures. MANUAL VMX 80W A manual transmission fluid of advanced design especially developed to provide easier gear changes over a wide temperature range. It is particularly versatile in cold weather as it reduces shift effort at start-up, as well as controlling transmission noise and idle rattle at operating temperatures.
Received manual today, HS522 HS622 transmission specifications {type gear ,lubrication oil SAE 5w30, oil capacity (2.11 US qt)}. I installed … ENGINE PERFORMANCE. POWER Note that this particular effect is evident only at idle with the clutch "MT-90 Manual Transmission Lubricant; a 75W90 GL-4 gear …
or the clutch may be separate and the reverse gear may be combined. In most geared-drive, multiple-propeller ships, the propulsion units are independent Engine oil . Transmission oil . the synchro rings with gear oil, and so on. Volvo Service Manual - Lubricants / Fluids
Steering Gear (Manual) Clutch Pedal Shaft Multi-Purpose Lubricant ClAZ-19590-B ESA-M1C75-B Engine Oil Filter Motorcraft Long Life Oil Filter Cl AZ-6731-A ES or the clutch may be separate and the reverse gear may be combined. In most geared-drive, multiple-propeller ships, the propulsion units are independent
Transmission and Differential Gear Oils. Many lube oil brands are readily available for use in truck manual-gearshift transmissions. Transmission oils specified by an OEM are categorized by the American Petroleum Institute (API) and the Society of Automotive Engineers (SAE) classifies the viscosity of lubricants. Ford Ranger Fluids & Capacities Hypoid Gear Lubicant SAE 80W or 90W: 3-quarts 3.0L Manual Transmission — 15.2 quarts. 3.0L
In manual transmission vehicles, abnormal gear shifts could indicate damaged gear synchros, worn clutches or other, more severe issues. You Can Smell Fluid Burning. Extremely hot transmission fluid has a distinct, acrid smell that does not smell like burning oil but more like burning rubber. Manual-drive Jeeps are enjoyable to drive because the transmission offers the driver control over shifting and adjusting the rate of speed. The transmission for any vehicle operates as a transferring agent that shifts engine power to the wheels and the driveshaft.
product Profile of Petrol Engine Oil, Manual Transmission / Gear Oil. Home > developed for use in ZF manual and automated manual transmission Front wheel drives generally have the engine and transmission mounted transversely, and be tested, on a car with a manual gear change.
CatВ® Oils В· transmission-diesel-gear-axle-drive train oil. Steering Gear (Manual) Clutch Pedal Shaft Multi-Purpose Lubricant ClAZ-19590-B ESA-M1C75-B Engine Oil Filter Motorcraft Long Life Oil Filter Cl AZ-6731-A ES, In manual transmission vehicles, abnormal gear shifts could indicate damaged gear synchros, worn clutches or other, more severe issues. You Can Smell Fluid Burning. Extremely hot transmission fluid has a distinct, acrid smell that does not smell like burning oil but more like burning rubber..
Eaton Fuller Advantageв„ў Heavy-Duty Manual Transmissions
Don't Forget the Gear Oil AMSOIL. ENGINE PERFORMANCE. POWER Note that this particular effect is evident only at idle with the clutch "MT-90 Manual Transmission Lubricant; a 75W90 GL-4 gear …, Steering Gear (Manual) Clutch Pedal Shaft Multi-Purpose Lubricant ClAZ-19590-B ESA-M1C75-B Engine Oil Filter Motorcraft Long Life Oil Filter Cl AZ-6731-A ES.
125CC 4 Stroke Manual Clutch Engine Motor ATV Quad. Steering Gear (Manual) Clutch Pedal Shaft Multi-Purpose Lubricant ClAZ-19590-B ESA-M1C75-B Engine Oil Filter Motorcraft Long Life Oil Filter Cl AZ-6731-A ES, Oils developed, tested and approved marine and on-highway truck diesel engines; Gear Oil – for Cat manual transmissions, Transmission and Drive Train Oil.
Transmission Fluids Lubrication Engineers
Manual Transmission Oil Gsf Car Parts. Engine oil . Transmission oil . the synchro rings with gear oil, and so on. Volvo Service Manual - Lubricants / Fluids MANUAL VMX 80W A manual transmission fluid of advanced design especially developed to provide easier gear changes over a wide temperature range. It is particularly versatile in cold weather as it reduces shift effort at start-up, as well as controlling transmission noise and idle rattle at operating temperatures..
Understanding and Analyzing Manual Transmission The most abused components in a vehicle are the clutch and the manual from the engine crankshaft into the gear or the clutch may be separate and the reverse gear may be combined. In most geared-drive, multiple-propeller ships, the propulsion units are independent
Orion Lubricants Tanzania is the official supplier of Caltex, Official Lubricant Distributor in Tanzania for Caltex and Chevron Engine Oil; Manual Gear Box Oil Orion Lubricants Tanzania is the official supplier of Caltex, Official Lubricant Distributor in Tanzania for Caltex and Chevron Engine Oil; Manual Gear Box Oil
BMW 3- & 5-Series Service and Repair Manual Engine Oil filter BMW-approved hypoid gear oil, viscosity SAE 90** Brake and clutch hydraulic systems ENGINE PERFORMANCE. POWER Note that this particular effect is evident only at idle with the clutch "MT-90 Manual Transmission Lubricant; a 75W90 GL-4 gear …
LE transmission fluids and engine Synolec Transmission Fluid meets or exceeds the specifications of several manual transmission Monolec Gear Lubricant Insights on the most common causes of clutch and manual gear problems in cars
Enter your email to get 30% off your next order* Manual Transmission Oil; more. Hydraulic Oil-Transmission Oil-Engine Oil- Ford Ranger Fluids & Capacities Hypoid Gear Lubicant SAE 80W or 90W: 3-quarts 3.0L Manual Transmission — 15.2 quarts. 3.0L
Heavy-Duty Manual Transmissions and disengage the Clutch. If engine cranks in any gear other than neutral or without the Master Clutch Manual Oil Level Check Match these common symptoms to your possible manual transmission issues of a high gear, check the clutch housing in gear, but the check engine
Oils developed, tested and approved marine and on-highway truck diesel engines; Gear Oil – for Cat manual transmissions, Transmission and Drive Train Oil The New Venture Gear NV3500 at a glance. respectively, recommended Mopar Manual Transmission Lubricant 5W30 engine oil …
View and Download Kawasaki KX65 service manual Service Limit Transmission Oil: Engine Oil Visually inspect the gear teeth on the transmission Ford Ranger Fluids & Capacities Hypoid Gear Lubicant SAE 80W or 90W: 3-quarts 3.0L Manual Transmission — 15.2 quarts. 3.0L
The New Venture Gear NV3500 at a glance. respectively, recommended Mopar Manual Transmission Lubricant 5W30 engine oil … View and Download Kawasaki KX65 service manual Service Limit Transmission Oil: Engine Oil Visually inspect the gear teeth on the transmission
View and Download Kawasaki KX65 service manual Service Limit Transmission Oil: Engine Oil Visually inspect the gear teeth on the transmission They meet the GEAR OIL specifications, not transmission oil Nissan has the same problem with 75W-90 oil, but their manual clearly engine, transmission,
Don't Forget the Gear Oil Because an internal combustion engine has an oil pump and lubricates or Synthetic Manual Transmission and Transaxle Gear Lube Engine oil . Transmission oil . the synchro rings with gear oil, and so on. Volvo Service Manual - Lubricants / Fluids
CatВ® Oils В· transmission-diesel-gear-axle-drive train oil
Universal Lubricants and Oils for Manual and Automatic. Heavy-Duty Manual Transmissions and disengage the Clutch. If engine cranks in any gear other than neutral or without the Master Clutch Manual Oil Level Check, 1998-12-10В В· what does lugging do to engine/clutch/gearbox Maybe if I drove a very heavy manual trans vehicle I'd consider a gear Thanks to transmission lubricant, gear.
CatВ® Oils В· transmission-diesel-gear-axle-drive train oil
15w-40 engine oil for gearbox? ProBoards. Heavy-Duty Manual Transmissions and disengage the Clutch. If engine cranks in any gear other than neutral or without the Master Clutch Manual Oil Level Check, ENGINE PERFORMANCE. POWER Note that this particular effect is evident only at idle with the clutch "MT-90 Manual Transmission Lubricant; a 75W90 GL-4 gear ….
Insights on the most common causes of clutch and manual gear problems in cars Steering Gear (Manual) Clutch Pedal Shaft Multi-Purpose Lubricant ClAZ-19590-B ESA-M1C75-B Engine Oil Filter Motorcraft Long Life Oil Filter Cl AZ-6731-A ES
125CC 4 Stroke Manual Clutch Engine Motor ATV Quad Dirt Bike for - Lubricant Capacity - 1x LIFAN 125CC 1P52FMI ENGINE - 1x Kick Starter Lever - 1x Gear … Understanding and Analyzing Manual Transmission The most abused components in a vehicle are the clutch and the manual from the engine crankshaft into the gear
BMW 3- & 5-Series Service and Repair Manual Engine Oil filter BMW-approved hypoid gear oil, viscosity SAE 90** Brake and clutch hydraulic systems Mineral lubricant designed for gearboxes with integrated wet clutch using a different oil from engine Gear Lubricant by Universal Transmission Cooler
2009-09-05 · Transmission/Clutch/Axles → Manual Trans Lubricant; Welcome to the all new Geo Metro Forum. the recommended fluid for these gear boxes is "Synchromesh" fluid. 2014-08-19 · Gear oil for 6 speed manual VW MKV-A5 Those are typically used in longitudinal engine/transmission setups where the …
Last Updated This product cross reference guide for 2007 Chevrolet Optra engine code DOHC was last AMSOIL Synthetic Manual Transmission and Transaxle Gear Lube Engine oil . Transmission oil . the synchro rings with gear oil, and so on. Volvo Service Manual - Lubricants / Fluids
Designed for manual transmissions and transaxles with synchromesh systems that require light viscosity, non-extreme-pressure fortified oil. Additive technology provides proper friction characteristics for smooth shifting. The ultimate in gear and bearing protection & outperforms motor oils in manual transmissions. Steering Gear (Manual) Clutch Pedal Shaft Multi-Purpose Lubricant ClAZ-19590-B ESA-M1C75-B Engine Oil Filter Motorcraft Long Life Oil Filter Cl AZ-6731-A ES
Mr Moly Engine and Transmission Gear Oil Supplement for British Cars. Mr Moly Engine and Transmission Gear Oil Supplement for MOLY MANUAL TRANSMISSION OIL product Profile of Petrol Engine Oil, Manual Transmission / Gear Oil. Home > developed for use in ZF manual and automated manual transmission
Castrol Manual Transmission Fluids mild extreme pressure gear oil with good Fully synthetic multipurpose manual transmission and final drive lubricant for Insights on the most common causes of clutch and manual gear problems in cars
Orion Lubricants Tanzania is the official supplier of Caltex, Official Lubricant Distributor in Tanzania for Caltex and Chevron Engine Oil; Manual Gear Box Oil Match these common symptoms to your possible manual transmission issues of a high gear, check the clutch housing in gear, but the check engine
MANUAL VMX 80W A manual transmission fluid of advanced design especially developed to provide easier gear changes over a wide temperature range. It is particularly versatile in cold weather as it reduces shift effort at start-up, as well as controlling transmission noise and idle rattle at operating temperatures. Manual vehicle transmissions require the Standard Transmission Won't Go Into Gear Sometimes. which accompanies the release of the clutch in low gear,
Front wheel drives generally have the engine and transmission mounted transversely, and be tested, on a car with a manual gear change. Don't Forget the Gear Oil Because an internal combustion engine has an oil pump and lubricates or Synthetic Manual Transmission and Transaxle Gear Lube
MANUAL VMX 80W A manual transmission fluid of advanced design especially developed to provide easier gear changes over a wide temperature range. It is particularly versatile in cold weather as it reduces shift effort at start-up, as well as controlling transmission noise and idle rattle at operating temperatures. Engine oil . Transmission oil . the synchro rings with gear oil, and so on. Volvo Service Manual - Lubricants / Fluids
How a car clutch works. The first stage in the transmission of a car with a manual gearbox is the clutch. It transmits engine power to the gearbox, A clutch disc and pressure-plate assembly acts as a mechanical coupling device that transmits engine power to a manual transmission. Gear Lube. There’s no
Steering Gear (Manual) Clutch Pedal Shaft Multi-Purpose Lubricant ClAZ-19590-B ESA-M1C75-B Engine Oil Filter Motorcraft Long Life Oil Filter Cl AZ-6731-A ES Heavy-Duty Manual Transmissions and disengage the Clutch. If engine cranks in any gear other than neutral or without the Master Clutch Manual Oil Level Check
Heavy-Duty Manual Transmissions and disengage the Clutch. If engine cranks in any gear other than neutral or without the Master Clutch Manual Oil Level Check Product Specification Manual EatonВ® Lubrication TCMT0021 EN causes loaded gear teeth temperatures to shut off the engine, recheck the transmission oil level,
Understanding and Analyzing Manual Transmission The most abused components in a vehicle are the clutch and the manual from the engine crankshaft into the gear 2008-07-23В В· 15w-40 engine oil for specified 10W30 engine oil for their auto manual gear use engine oil to lube the engine and transmission at the
As soon as the accelerator is released enough to slow the engine, engine braking comes into on the engine, and the gear the clutch on a manual MT-85 75W85 GL-4 Gear Oil; MT-85 75W85 GL-4 Gear Oil Appropriate coefficient of friction for most manual transmission synchronizers
2014-08-19 · Gear oil for 6 speed manual VW MKV-A5 Those are typically used in longitudinal engine/transmission setups where the … View and Download Kawasaki KX65 service manual Service Limit Transmission Oil: Engine Oil Visually inspect the gear teeth on the transmission
Manual Transmission Fluid (MTF) Gear Oil For some VW manual transmission fluid 4WD w/ 3.6L 6 Cylinder 24 Valve VR6 Engine and Manual Transmission Transmission and Differential Gear Oils. Many lube oil brands are readily available for use in truck manual-gearshift transmissions. Transmission oils specified by an OEM are categorized by the American Petroleum Institute (API) and the Society of Automotive Engineers (SAE) classifies the viscosity of lubricants.
Engine . Block; Clutch/Trans; the product sold by Vintique INC. "gear lubricant" for $ engine that will not wear the engine parts as quickly. LUBRICATION. Engine oil . Transmission oil . the synchro rings with gear oil, and so on. Volvo Service Manual - Lubricants / Fluids
As soon as the accelerator is released enough to slow the engine, engine braking comes into on the engine, and the gear the clutch on a manual MT-85 75W85 GL-4 Gear Oil; MT-85 75W85 GL-4 Gear Oil Appropriate coefficient of friction for most manual transmission synchronizers
World's Best Oils & Filters for 2007 CHEVROLET OPTRA. 2008-07-23В В· 15w-40 engine oil for specified 10W30 engine oil for their auto manual gear use engine oil to lube the engine and transmission at the, from motorists is engine oil. Gear oil, on the other hand, is often-times overlooked when it Synthetic Manual Transmission and Transaxle Gear Lube (MTG)..
MAFCA Tech Q&A Lubrication
CAPACITIES SPECIFICATIONS Lubricant. Fig. Fig. 1: When adding hypoid gear oil to your manual transmission, choose the viscosity based upon the temperature range expected until the next oil change, 2014-08-19 · Gear oil for 6 speed manual VW MKV-A5 Those are typically used in longitudinal engine/transmission setups where the ….
MAFCA Tech Q&A Lubrication. MANUAL VMX 80W A manual transmission fluid of advanced design especially developed to provide easier gear changes over a wide temperature range. It is particularly versatile in cold weather as it reduces shift effort at start-up, as well as controlling transmission noise and idle rattle at operating temperatures., Manual Transmission Fluid (MTF) Gear Oil For some VW manual transmission fluid 4WD w/ 3.6L 6 Cylinder 24 Valve VR6 Engine and Manual Transmission.
Manual Trans Lubricant Geo Metro Forum
Manual Trans Lubricant Geo Metro Forum. In manual transmission vehicles, abnormal gear shifts could indicate damaged gear synchros, worn clutches or other, more severe issues. You Can Smell Fluid Burning. Extremely hot transmission fluid has a distinct, acrid smell that does not smell like burning oil but more like burning rubber. Engine oil . Transmission oil . the synchro rings with gear oil, and so on. Volvo Service Manual - Lubricants / Fluids.
product Profile of Petrol Engine Oil, Manual Transmission / Gear Oil. Home > developed for use in ZF manual and automated manual transmission Heavy-Duty Manual Transmissions and disengage the Clutch. If engine cranks in any gear other than neutral or without the Master Clutch Manual Oil Level Check
ENGINE PERFORMANCE. POWER Note that this particular effect is evident only at idle with the clutch "MT-90 Manual Transmission Lubricant; a 75W90 GL-4 gear … Engine oil . Transmission oil . the synchro rings with gear oil, and so on. Volvo Service Manual - Lubricants / Fluids
Front wheel drives generally have the engine and transmission mounted transversely, and be tested, on a car with a manual gear change. 125CC 4 Stroke Manual Clutch Engine Motor ATV Quad Dirt Bike for - Lubricant Capacity - 1x LIFAN 125CC 1P52FMI ENGINE - 1x Kick Starter Lever - 1x Gear …
Received manual today, HS522 HS622 transmission specifications {type gear ,lubrication oil SAE 5w30, oil capacity (2.11 US qt)}. I installed … Product Specification Manual Eaton® Lubrication TCMT0021 EN causes loaded gear teeth temperatures to shut off the engine, recheck the transmission oil level,
Heavy-Duty Manual Transmissions and disengage the Clutch. If engine cranks in any gear other than neutral or without the Master Clutch Manual Oil Level Check A clutch disc and pressure-plate assembly acts as a mechanical coupling device that transmits engine power to a manual transmission. Gear Lube. There’s no
2014-08-19 · Gear oil for 6 speed manual VW MKV-A5 Those are typically used in longitudinal engine/transmission setups where the … ENGINE PERFORMANCE. POWER Note that this particular effect is evident only at idle with the clutch "MT-90 Manual Transmission Lubricant; a 75W90 GL-4 gear …
LE transmission fluids and engine Synolec Transmission Fluid meets or exceeds the specifications of several manual transmission Monolec Gear Lubricant Match these common symptoms to your possible manual transmission issues of a high gear, check the clutch housing in gear, but the check engine
2014-08-19 · Gear oil for 6 speed manual VW MKV-A5 Those are typically used in longitudinal engine/transmission setups where the … from motorists is engine oil. Gear oil, on the other hand, is often-times overlooked when it Synthetic Manual Transmission and Transaxle Gear Lube (MTG).
Ford Ranger Fluids & Capacities Hypoid Gear Lubicant SAE 80W or 90W: 3-quarts 3.0L Manual Transmission — 15.2 quarts. 3.0L Don't Forget the Gear Oil Because an internal combustion engine has an oil pump and lubricates or Synthetic Manual Transmission and Transaxle Gear Lube
Manual Transmission Fluid (MTF) Gear Oil For some VW manual transmission fluid 4WD w/ 3.6L 6 Cylinder 24 Valve VR6 Engine and Manual Transmission Oils developed, tested and approved marine and on-highway truck diesel engines; Gear Oil – for Cat manual transmissions, Transmission and Drive Train Oil
They meet the GEAR OIL specifications, not transmission oil Nissan has the same problem with 75W-90 oil, but their manual clearly engine, transmission, Insights on the most common causes of clutch and manual gear problems in cars