Followup related question. I have a Fram DG3682 from a while back that I bought for my '71 Elan +2S. Not sure why, but it must have been on some list. The one I had used before was a PH2870A, which is what is on most lists. Took me a while, but I figured out the difference. The PH2870A has a 22 PSI relief valve setting, and the 3682 is listed as "none", or 0 PSI.
When you look at the "supported vehicles" on web sites, they both show the same cars, (VW Beetle, Ford Cortina, etc), except for Lotus, which is only shown for the 2870A. What is the impact of relief valve difference and does it matter? Why would it not matter to a 1970 Ford Cortina, but matter for the very similar engine in the Elan?
1971 Elan +2S
1975 Elite 503
Last edited by DaveM; 11-21-2013 at 05:48 AM.
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