Engine oil can begin to clump and build up inside a vehicle's engine, causing damage as a result. However, an engine oil flush will get rid of the majority of these clumps and protect your vehicle from engine damage. Transmission fluid, because of its consistency, makes a good solvent. However, you cannot use transmission fluid by itself to perform an engine flush--you must add it to engine oil.
Drain the oil out of your car and remove the oil filter from the vehicle.
Put a new oil filter on your vehicle and add one quart of transmission fluid to the standard motor oil that you are going to put into your vehicle.
Start the engine and let the vehicle idle for 15 minutes. Turn the vehicle off and let the engine cool down completely before continuing with the following steps.
Drain the fluid from the vehicle and remove the oil filter.
Put a new oil filter on the vehicle and fill it with synthetic or synthetic-blend oil. This is a higher quality oil than standard oil and will prolong the life of your engine.
