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Registered
Join Date: May 2002
Location: Portland, Oregon
Posts: 12,643
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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
1970 VW Sunroof Bus - "The Magic Bus"
1971 Jaguar XKE 2+2 V12 Coupe - {insert name here}
1973.5 911T Targa - "Smokey"
2020 MB E350 4Matic
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