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If your car is using to much oil, you'll need to find out if your oil is leaking or not. If the oil is leaking out and this is the cause of the lowering of the oil level, you may have a worn gasket or plug in your sump, sump gasket, engine head gasket ect. If your oil is not leaking, but being burnt by your engine, the most common cause is the rings on your pistons are worn. This will cause oil to get past the sealling surfaces of your piston rings and enter the combustion chamber where it is burnt along with the fuel. The tell tale sign for this is excess exhaust smoke. The smoke will also be a blue colour.

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14y ago
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13y ago

Absolutely, yes. Worn piston rings can allow too much oil to enter the combustion chamber (cylinder) which results in oil being forced out through the exhaust. This is sometimes noticeable by an oily residue in and around the tailpipe and/or smokey (more than normal) exhaust. Worn out piston rings can also allow the compressed gasses from the combustion chamber to enter the crankcase (essentially the oil reservoir) and can actually force oil to be evacuted through the main engine seals and even up through the dipstick and filler tubes. Not a very environmentally friendly condition, the problem ideally should be rectified immediately.

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11y ago

Assuming you do not have a leak, you more than likely have worn piston rings, and bearings.

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Q: A car uses too much oil when what parts are worn?
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