This is a response to an e-mail sent to Valvoline, about their racing oil, and if it was available in a 10-30.


The VR1 Racing Oil is available in a 10w30, just ask your retailer such as Napa Auto Parts to order it for you. The oil industry per ILSAC had to only decrease the levels of ZDDP (Zinc) in certain viscosity to meet new emission standards. The ILSAC rated oils still have an average of .085 levels of zinc. Testing has shown on standard OEM set ups that used mild camshafts will still get plenty of protection from the new rated oils. There is an exception when it comes to extreme aftermarket applications. If you have a high performance solid lifter set up with an aggressive cam then you will need to use a quality Racing Oil or Fleet Oil for break in and normal usage. These oils have an increased level of Zinc that will range from .14 to .16 and will provide plenty of protection.
The consensus in the industry is that the current chemical limits of the GF-4/SM category are still sufficient to protect all "street" engines, including older flat tappet engines. The engine tests required for a GF-4/SM product is just as severe as the older, higher ZDDP allowed category. For the special applications (aggressive cams, high HP racing motors, etc) where the customer needs more ZDDP protection, our NON-GF-4 products still contain the higher levels (such as VR-1 and "not street legal" racing).

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

Good info and it is good to know for break-in and higher lift racing cams!

Thanks!

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Aggressive Ted

http://cid-32f1e50ddb40a03c.photos.live ... %20Swinger


74 Swinger, 9.5 comp 254/.435 lift cam, 904, ram air, electric fans, 2.5" HP2 & FM70 ex, 1920 Holley#56jet, 2.76 8 3/4 Sure-Grip, 26" tires, 25+MPG

If I remember correctly There are two base (crude) oil types, "paraffinic" or paraffin based, and "asphaltic" or asphalt based. We studied this when I was in vo-tech. The answer we came up with is each is ok by it's self, but mixing oils with different bases is asking for sludge. This was in the late 80s, so the "synthetic"oils were not discussed. PS if I recall correctly synthetic oil base is just natural oil that has ben processed more so that the oil molecules are consistent.

I entered this part way through this thread so if someone has commented on this I'm sosorry

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Dave

1977 d-200 crew cab ex-army pickup wants it's /6 back
1962 Valiant 2 door, 170, three on the tree
1972 d-100 parts truck
80 volare wagon now a parts car