Quote:
Originally Posted by algolfer69
Anyone else know about switching to synthetic oil to early and causing engine problems?
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That's been proven to be a myth.
I know for a fact synthetic is better because I've personally run it in every street and racing engine I've built or owned for the last 30 years. I had a Ford Mustang with a 351 Cleveland and 170k miles on it and when I took the oil pan off it was clean as the day it rolled off the assembly line. The windage tray, crank, bearings, rods, everything was clean without a speck of tar, varnish or sludge. I mic'ed the bearings, crank and cylinder bores and they were all very close to spec for a new engine.
I remember using conventional oil before that, and even with 3k oil changes, still having to take a putty knife to scrap the crap out of oil pans after 40 to 50k miles.