Best synthetic oil?

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Mar 5, 2003
Which of these synthetic oils (Schaeffer's, Mobil 1, Mobil Delvac, Redline, and Amsoil) do you consider to be the best synthetic oil (of course, Schaeffer's is available as a part synthetic and a full synthetic)?
Oh boy, here we go. [Roll Eyes] Depends on the engine and other factors. In terms of specs. I think the orders is: Redline, Amsoil, Mobil 1, Schaeffer's. They are all good. For racing and high performance I think Redline. For the Money Mobil 1 and Schaeffer's. For extended drains Amsoil, (regular 5w/10w-30. [Big Grin] ) Delvac 1 is in a different class but is one of the best oils money can they say. [ June 09, 2003, 10:55 PM: Message edited by: buster ]
Personally I consider best as: 1) Lowest engine wear in ppm/mile 2) Lowest varnish/carbon/sludge it leaves behind 3) How well it holds up over the drain interval I think you can't go wrong with any of the oil you mention. Each might shine over the others in a particular application but I think those are the best out there.
In the summer I look for a 5W40 with the highest flashpoint, in the winter a 0W30 or 0W40 depending on which part of the country I'm in. For use in a engine with a highly loaded valve train XXW50 all year round. Then I shop around for the best price from an oil company or brand that I recognize, not caring whether they are a group III or PAO product.
I have started using M1 in winter only because of its excellent cold starting properties. I feel a good group II or II+ dino (Chevron/Havoline) is fine for the rest of the year for my application.
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