Reply to "New oil from Castrol: EDGE."

busterMember

BP/Castrol ran the ASTM Seq IVA test on Royal Purple, Valvoline, Mobil 1 and others and found Edge trumped M1 by 8x on this test.

As I said on Bob's, it's the additives that really make the difference and I think Castrol/Valvoline/Amsoil all have the edge in that area. All 3 seem to use Lubrizol too. FWIW.

1/29/098:53 AM

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