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PCA Member since 1988
Join Date: Feb 2018
Location: SW Washington State
Posts: 4,646
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Quote:
Originally Posted by HarryD
Probably the best advice on this topic is to find a reputable AIR COOLED engine builder and see what he is recommending. These guys have seen plenty of motors and are aware of the issues.
Personally, I am currently using LiquiMoly High Tech Touring 20W-50. Why? Per their web site, it meets the requirements of "ACEA A3/B4, E2, Allison C4, API CG-4, API SL, Volvo VDS"
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Harry, I hear ya, but the manufacturers change their formulations regularly, so the stuff in the same bottle isn't the same now as it was a few years ago. And they don't announce those reformulations. That's why you can't rely on what you always used. The newer stuff probably won't cause a customer come-back on an engine within a few years, but may not provide as long life as other oils.
I don't know what the right answer is, but I do know that it keeps changing...
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1973.5 911T with RoW 1980 SC CIS stroked to 3.2, 10:1 Mahle Sport p/c's, TBC exhaust ports, M1 cams, SSI's. RSR bushings & adj spring plates, Koni Sports, 21/26mm T-bars, stock swaybars, 16x7 Fuchs w Michelin Pilot Sport A/S 3+, 205/55-16 at all 4 corners.
Cars are for driving. If you want art, get something you can hang on the wall!
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