This pushes the oil back towards the crankcase and away from the combustion chamber. This is especially critical with the 2nd oil ring because it often has a tapered face that scrapes oil off the cylinder wall as the piston moves down. Compression rings have a dot or mark that indicates which side faces up (towards the top of the piston). Check with your new car dealer to see if any of these may apply to your vehicle.Ī common engine assembly mistake is installing the piston rings upside down. Others may be covered by a factory Technical Service Bulletin (TSB) and/or special extended warranty. Some defects can cause excessive oil consumption may be covered under the OEM powertrain warranty. It might just be a leaky gasket or seal, or it could indicate a manufacturing defect such as defective or improperly installed piston rings, improper cylinder bore finish, or a poorly designed Positive Crankcase Ventilation (PCV) system that sucks too much oil vapor from the crankcase back into the intake manifold. We do not agree!.Ī newer late model low mileage engine that is using more than a quart of oil between changes definitely has a problem. Others may say using a quart of oil every 2,000 to 3,000 miles is normal for specific engines. Some car makers claim using up to a quart of oil between changes is "normal" for high revving performance engines. But manufacturing mistakes do occur, and certain engines may use too much oil because the cylinders were not finished properly at the factory, because the piston rings are not sealing properly because of a manufacturing defect, because the valve guide seals are not doing their job (poor design, improper materials or assembly), or because the Positive Crankcase Ventilation (PCV) system is sucking too much air and oil vapor back into the engine (design flaw). The auto makers often deny these engines have a problem and try to shift the blame back on the consumer for not checking or maintaining their oil properly. If you do a Google search on High Oil Consumption Problems, you will see a lot of consumer complaints about certain late model engines that use too much oil.
Manufacturer Defects May Increase Oil Consumption However, if your engine is using more than a quart of oil every 1,000 miles, it means your engine has a serious oil leak or some severe wear problems that may require expensive repairs. If your engine is using a quart or more of oil every 1,000 to 1,500 miles, you have a problem regardless of the age or mileage on your vehicle.Īs for older, higher mileage vehicles (those with more than 75,000 miles on the odometer), using a quart of oil every 1,500 to 3,000 miles is not unusual. A sudden increase in oil consumption would signal a potential problem that should be investigated. The rate at which oil consumption goes up should be very slow and gradual. However, oil consumption will slowly increase over time as an engine accumulates miles and wear. The same holds true for older engines that may have up to 75,000 miles on the odometer, are i n good condition and have been properly maintained (regular oil and filter changes). Most engines in new vehicles today should not use any oil within a span of 3,000 miles, and no more than one quart between extended oil change intervals of 5,000 to 7,500 miles. What Every Motorist Should Know About Engine Oil Consumption by Larry Carley copyright Īn engine that uses oil is a problem nobody wants.
Volkswagen 2.0t sucking air dip stick manuals#
What Every Motorist Should Know About Engine Oil ConsumptionĪuto Repair Library, Auto Parts, Accessories, Tools, Manuals & Books, Car BLOG, Links, Index
0 kommentar(er)
