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A car burns oil for several reasons. The problem usually occurs with older cars that have a lot of miles on them, when the engine has endured much wear and tear. There may be a leak around the valve covers, for example. Newer cars burn very little, if any oil at all, between oil changes every 3,000 miles. But even newer cars can burn oil if their engines havent been maintained properly.
Step 1
Inspect the valve cover(s)--there may be one or two--on the engine for oil leaks. If theres oil leaking along the valve covers where they meet the engine head, thats probably why the car is burning oil. Because this area is not under pressure, the leak will be rather slow.
Step 2
Check the tightness of the valve cover bolts. If the bolts are loose, that could cause a car to burn oil. Use a torque wrench to tighten them. Check the cars repair manual to find out how tight the bolts should be. Be sure the bolts arent too tight or the valve cover could warp or crack.
Step 3
Remove the valve cover by loosening the bolts. Pull the gasket out of the groove in the valve cover. If the gasket is deteriorated, you may have to pry it off with a flat-blade screwdriver. Also, remove the inner o-rings with your fingers. Replace the valve cover gasket (see Resources).
Step 4
Drain the engine oil in the car thats burning oil. Install a new oil filter. Add a heavier-weight oil into the crankcase. Choose a weight thats a grade heavier than the oil you were using. It wont leak as easy because its thicker.
Add STP Smoke Treatment to the car during every oil change. This product will thicken the oil in the car to reduce oil leaking and burning. Follow the manufacturers instructions for best results. Basically, you just add a bottle of the STP Smoke Treatment to clean oil in a warm engine.
Tip
- In a car that has a high amount of miles on it, using one quart of oil every thousand miles can be expected.
Warning
- A car thats burning oil wont pass an emissions test.
Items you will need
- Repair manual
- Torque wrench
- Flat-blade screwdriver
- New valve gasket
- New oil filter
- Heavier-weight oil
- STP Smoke Treatment
