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Guest tommiez

Oil Consumption

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Guest tommiez
:o Just bought a 2000 corolla..and it is burning alot of oil..like 3 quarts per tank of gas.. It has 90k miles..and runs great....no oil leaks..does anyone know why with so few miles it would burn so much oil..

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Guest usmc0351

Hi, I was reading some of the other posts with interest because a friend of mine has been losing a lot of oil in her 1999 Corolla. She asked me to take a look, which I did. There are NO oil leaks anywhere on the engine, the engine is running fine, no skip or misfire, and no smoke. I did notice the rear bumper cover over the tailpipe is somewhat blackened, and there is a lot of soot in the tailpipe. A mechanic told her, in writing, that she had "major internal engine damage". There is no major internal engine damage, but this car is using a ton of oil. Is the max life additive still the best fix? I'm wondering, if it's a lubrication issue with the piston rings, would Marvel Mystery oil do the job too?

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If piston rings are shot, no magical oil treatment is going to help. The rings will need to be replaced. A compression test and if required a leak down test is the way to go.

 

 

I agree with the suggestion to do a compression test--do it with the engine at normal operating temp.

Also, valve stem seals is another possible source of oil consumption, and not an uncommon situation with older engines.

I don't recommend oil additives--perhaps a short term fix (only in some cases)--but in the long run, they don't help.

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