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I have no knowledge and so I will definitely follow JPS's advice to use the oil (Valvoline 20-50 all seasons) and filter (Fram 2870A) they specify.

 

The Man, is providing a 24/24,000 warrantee for the engine and transmission so I would assume he knows what he is talking about and in any case I don't want to do anything that might void my warrantee.

 

John does say in his Spec Paper that " .... Synthetic oils are not recommended for air cooled engines...."

 

I did notice the Valvoline racing 20-50 has some zinc....... bart

Originally Posted by bart:

I have no knowledge and so I will definitely follow JPS's advice to use the oil (Valvoline 20-50 all seasons) and filter (Fram 2870A) they specify.

 

The Man, is providing a 24/24,000 warrantee for the engine and transmission so I would assume he knows what he is talking about and in any case I don't want to do anything that might void my warrantee.

 

John does say in his Spec Paper that " .... Synthetic oils are not recommended for air cooled engines...."

 

I did notice the Valvoline racing 20-50 has some zinc....... bart

Old school thinking. If an engine is older and a bit of a leaker, then synthetic can make it worse, but there's nothing fundamentally wrong with using a synthetic in an aircooled VW engine, as long as it can protect the lifter faces. Gene Berg, one upon a time, decided that synthetic oils were incompatible with aircooled engines (iIrc, they didn't seem to absorb as much heat? I'll have to look that up..), but someone on the Samba recently made the comment that Gene's observations were flawed and the new oil was simply doing a better job and the engine wasn't developing as much heat from friction to start with.  

 

When it's past warranty, there are better filters (Wix and Napa, and others) than the Fram. What's the engine?

Thanks for the clarification Marty, but yes I know the suby is water-cooled. I saw a very nice suby outback motor in a speedster recently at the Irvine Cars & Coffee. A fellow by the name of Dan owns it, I believe he is a dentist. Anyway, the 20-50 Kendall is a high performance racing oil I am trying. It may be overkill for my speedster but I will try it for a while and check results. Looks like like Rusty came up with a nice article on Synthetics.
 
Originally Posted by Marty Grzynkowicz-2012 IM Suby-Roadster:
Dutch, my Roadster is watercooled.  I think that was obvious when I said Subaru, but I just wanted to make that clear.   My engine builder advised Organic oil for the first 10,000 miles & now high quality synthetic.

 

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