Quote:
Originally Posted by madmaxx
"......... You can wear your engine out with 20W50 with day to day starting.
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not true, at least not in my case.
Using 15w-50 Mobil 1 for 9 years, nearly 40,000 miles. No measurable wear on rod or main bearing checked recently. Piston/cylinder clearance unchanged. Car started and ran 4 to 7 times a week, minimum 30 miles, usually more. Longest trip 1700 miles over a 3 day period.
I do agree that it doesn't seem right that someone would set up a high perfmance engine, a street engine that is, with loose bearings.
Z.
p.s. no leaks either