Saturday, February 11, 2012

How To Change Your Vehicle's Oil and Filter

By Jason Durity
Before starting your oil change make sure you purchase the correct grade of oil for your car's engine. Also have an oil pan, wrench, oil filter wrench, funnel and a cotton rag. Auto manufacturers normally do not require car owners to change their oil filters with each oil change, most people do to make certain that the existing one isn't clogged. If you are using a ramp, place the vehicle on it. Remove the oil filter cap from the engine valve cover. This will ventilate the crankcase for easier drainage of oil.
Remove the oil pan drain plug. Make sure your oil pan is correctly positioned under the drain hole and don't splash hot oil on yourself.
Remove the oil filter, taking care to ensure your oil pan is in place to catch the remaining oil. Wipe clean the surface that the oil filter seal rests against.
Apply a liberal coating of fresh oil to the new oil filter seal.
Hand-tighten the new oil filter. Do not tighten the filter with the filter wrench.
Using a funnel in the oil filler hole keeps things tidy. Before adding that last litre of oil, check the oil level with the dipstick. To high an oil level in the crankcase will let the crankshaft churn the oil to foam. This will result in oil pump starvation, which means your engine won't be properly lubricated. Overfilling can also lead to high crankcase pressure, possibly leading to oil seal leaks.
Once you have finished adding new oil, start the engine to check for leaks. You may notice some clatter or a low oil pressure reading, but don't worry, that's normal.
Take the vehicle off the ramp (remember the blocks behind the wheels), turn the engine off and check the dipstick. It may read a little low, That's because the oil filter has taken in some oil, as much as half a litre. When should you change your oil again? 

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