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Re: Synthetic oil vs. non syn -NO SLICK 50 (archive)

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Posted by Brandon Wheaton on October 02, 2000 at 19:49:56:

In Reply to: Re: Synthetic oil vs. non syn -NO SLICK 50 posted by Scott on September 30, 2000 at 23:27:30:

I have always been told that unless your engine is new or relatively new, you shouldn't ever change oil brands if at all possible, let alone transition from regular to synthetic. If you must make the switch, I would try adding a mixture, say 1/4 synthetic on your next change, then 1/2 at the next, then 3/4 and so on. Seems like it would be easier on your engine. Different oils have different detergents that may not react favorably with the current state of your engine.

Take care.
B. Wheaton
1989 E30 M3

Never use Slick 50 or any other snake oil product/additive like this. These things leave teflon deposits in your engine that can block small passages. If this stuff was any good, all the major oil companies would offer it in their products.

Go with synthetic over coventional oil. It contains better properites to ensure longer engine life and you can change it at greater intervals. I usually change mine around 5,000 miles. Synthetic is superior...ask anyone.

Are E30 M3's better suited to run regular or synthetic oil? The guy I bought my car from said regular oil works best. Any thoughts?.... How about the use of slick 50 and Prolong, do they do any harm? What works well in conjunction with the S14 motor?


I would like to know also, my oil is being changed this after noon, just turned 85,000

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