I have a 2000 corolla that is using about 1 quart per 1000 miles. No leaks, definitely coming out the tailpipe, back bumper has residue above tailpipe and tailpipe is black. Does not smoke on start up and I only see smoke when accelerating hard. Cylinder compression is all with 5 psi of 185, plugs are not fouled. 82,000 miles, regular oil changes. Is it possible for this much consumption from valve stems seals, any other possibities other than rings? I also have a 96 camry with over 200k that was maintained same way with no oil use at all.
excessive oil consumption on 2000 corolla
Sep 05, 2005
2 Replies
Try replacing your PCV valve.
1 quart per 1,000 miles is at the high end of acceptable. Like tomcas mentioned, try replacing the PCV valve. When you measured cylinder compression, did you do wet and dry compression checks? If compression rises when squirting some oil into the cylinder, then the rings are suspect. If not, then valve stem seals are suspect.
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