today's best engine oil for air cooled Porsches
01-13-2018, 05:42 PM
#4
My guru told me he used swepco on his cars so that's what I use.
01-14-2018, 12:32 AM
#5
Best oil.... royal Purple 20-50 HPS
The royal purple hps has a higher zinc concentratation for engines such as these that demand it. I use it and love it. Also use royal purple 5w40 in my 996. I love their products
i do have a car bypass on my 3.2 so no worries on cats failing
i do have a car bypass on my 3.2 so no worries on cats failing
Last edited by porsche325; 01-20-2018 at 10:38 AM.
01-14-2018, 09:39 AM
#7
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Mobil V-Twin 20W50 would be a solid selection.
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01-14-2018, 10:44 PM
#8
Nordschleife Master
Just to add another one... Valvoline VR1 Racing 20W50 for early cars up to (and including) Carreras 3.2.
Last edited by ADias; 01-22-2018 at 09:24 PM. Reason: Clarification following JCGMS' question below.
01-15-2018, 12:24 AM
#11
Nordschleife Master
Cats are cheaper than engines. And I have not yet seen a cat destroyed by high-ZN oil. Valvoline has 1400PPM Zn which is reasonable; much more than that may be damaging.
Last edited by ADias; 01-15-2018 at 02:08 PM.
01-15-2018, 01:10 PM
#12
Team Owner
It eats cats. Thats why new oils dont have any
Manufacturers were spending a fortune in warranty claims for emissions as cats were being eaten
They applied pressure to have it removed from all regular " non racing" oil
They did not care as much about wear long after warranty than their pocket book
Manufacturers were spending a fortune in warranty claims for emissions as cats were being eaten
They applied pressure to have it removed from all regular " non racing" oil
They did not care as much about wear long after warranty than their pocket book
01-15-2018, 01:18 PM
#13
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01-15-2018, 04:02 PM
#14
Team Owner
