Compression Ignition Addict
Join Date: Apr 2007
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I would not use the Lucas oil additive - it is too thick. also would have to have a specific reason to use any oil additives as today's oil formulations do very well by themselves.
I just switched to the Valvoline Premium Blue 5W40. It comes highly recommended. The 15W40 should be good also, but many (most?) prefer a synthetic oil. If you are going to use the 15W40, I would just stick with the Motorcraft oil - it is very good.
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Last edited by bismic; 12-21-2008 at 12:43 PM.