Re: Oil Recommendation/Solid lifter 427
I was using castrol 20-50 along with the GM EOS which provides the correct zinc level and worked well. However for a short period EOS was nolonger available from GM until it was reintroduced under another part#. Anyway out of necessity I found Brad Penn 20-50 which has zinc and the proper detergents to minimize acid build up as well. I have had excellent results.
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Steve Shauger
The Supercar Registry
www.yenko.net
Vintage Certification™ , Providing Recognition to Unrestored Muscle Cars. Website:
www.vintagecertification.com
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