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Originally Posted by Ladera HCH
Synlubes answers sound fishy to me. Even if the oil didn't break down, gasoline would eventually contaminate the oil. I think this happens because of blowby (combustion charge blowing past the piston ring and into the sump). Usually gas will burn off once the oil reached operating temperatures, but if somebody only drives short distances, this will not occur.
Also, the "TriMagnet" may not be too beneficial in a Civic since the block, heads and pistons are aluminum. Hence, there's no ferrous metal flakes for magnet to capture.
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Exactly correct on all points. Anyone who tries this oil should take an oil sample every 2500 miles and send it in for an oil analysis to some place like
Blackstone Labs for analysis. The longest I've heard of anyone's oil surviving and still being considered good working order was 17,000 miles, and that was in a Chevy Camaro that burned about a half quart every 1000 miles or something, thus it was getting a fresh new half quart regularly. They also replaced the filter every 5000 miles or something which was apparently very beneficial as well. No way is ANY oil going to last you 150,000 miles and still be in any sort of decent shape. The absolute most I've heard of anyone making it was something like 55,000 miles, at which point the engine seized and was totally destroyed on every possible bearing surface.