Re: [Amc-list] flat tappet oil

[Frank Swygert <farna@xxxxxxx>]

ZDDP is zinc. Phosphorous is, however, another additive used as a high pressure lubricant in a similar manner as zinc. High phosphorous and no zinc should be as good, the same as no phosphorous and high zinc. 

I'm going to run the Accel brand from Wal-Mart for now. I don't know the zinc or phosphorous content, but the API SF rating indicates it has a high degree of those compounds in it. It's made by Warren Performance Products, P.O. Box 3007, Omaha, NE 68103; part number 22601. The low cost might mean it's reprocessed oil, but dino oil never loses "slipperyness", it just gets dirty and the additives wear out, especially the viscosity modifiers. 

I couldn't find a spec sheet for that particular part number, but their "Mag-1" diesel oils have 0.12% zinc and 0.112% phosphorous, with 15W-40 having 0.14 and 0.119%, respectively. I suspect the Accel SF rated oil is the same. See the spec sheet: http://www.warrendistribution.com/specsheet/specshee004.pdf.

This seems like a nice low-cost solution! 

Has any of the old car groups considered a lawsuit against the oil companies and possibly government? A suit for damages would likely end up with oil companies making suitable oil or at least additives that aren't high priced (like SLOB and the STP four cylinder stuff) available. I doubt any damages other than cost of lawyers could be had, but I'm not concerned about making any money from such a suit, just not having to pay $8 for a quart of oil just to run my car, instead of $2.50-$3.00 a quart. I wouldn't mind paying another $3-$5 for an additional additive per change, but that's a far cry from more than double the total cost. 

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Date: Tue, 18 Mar 2008 06:07:29 -0700 (PDT)
From: Davis Martin <martin-davis@xxxxxxxxxxxxx>

Ok That is not a normal walmart shelf oil. Also Phophorus is not zink I didn't see it list ZZDP levels.
   It is also not under 2.50 a QT like the oils at walmart these folks are looking at.
   Here is what I use. My machinist uses this when Joe Gibbs oil is too expensive. 
   http://www.valvoline.com/racing/
   Note the Zink level is .12 and the phophorous level is .12. 
   The conventional oil is 3.50 a QT at my local Napa auto parts store.
   Davis 

-- 
Frank Swygert
Publisher, "American Motors Cars" 
Magazine (AMC)
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