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Run to Rund · 03-12-2009, 10:30 AM

The new diesel oil, spec SJ, came out along with the Jan 2007 introduction of particulate traps for diesel pickups. You want to find the older spec oil, CI4+, that does not meet SJ. the oil companies get away with saying the new stuff is backwards compatible and meets CI4+ spec, but the new stuff has different additives and a major reduction in what we want to protect flat tappets. Most retailers don't have the old stuff anymore, but Chevron distributors may carry the old stuff in 5 gallon buckets.

03-12-2009, 10:30 AM	#17
Run to Rund Senior Member Join Date: Sep 2007 Location: Henderson, NV Posts: 584 Likes: 9 Liked 54 Times in 27 Posts	Re: Stocker Flat Tappet Oil.... The new diesel oil, spec SJ, came out along with the Jan 2007 introduction of particulate traps for diesel pickups. You want to find the older spec oil, CI4+, that does not meet SJ. the oil companies get away with saying the new stuff is backwards compatible and meets CI4+ spec, but the new stuff has different additives and a major reduction in what we want to protect flat tappets. Most retailers don't have the old stuff anymore, but Chevron distributors may carry the old stuff in 5 gallon buckets.