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Paul Workman · 08-08-2012

Considering the well established fact that ZDDP is important to flat tappet motors (from personal experience with a SBC motor too), If I assume those indicating Mobil 1 are using the oil of the current API "SN" rating (read: much reduced ZDDP levels), am I alone or does that bother anyone else to think so many ZR-1s are "in harms way"? ARE they in harms way?

p.

08-08-2012	#75
Paul Workman Join Date: Nov 2007 Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri Posts: 6,466	Re: Which oil do you use Considering the well established fact that ZDDP is important to flat tappet motors (from personal experience with a SBC motor too), If I assume those indicating Mobil 1 are using the oil of the current API "SN" rating (read: much reduced ZDDP levels), am I alone or does that bother anyone else to think so many ZR-1s are "in harms way"? ARE they in harms way? p. Last edited by Paul Workman; 08-08-2012 at 01:53 PM.