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Power Strokes
7.3 Aftermarket
oil talk, performance synthetics
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[QUOTE="TyCorr, post: 554197, member: 1451"] Mobil 1 5w40 or Valvoline EB. If not that, delo 400 is good. Anything over 3k in a 7.3 is a waste no matter what brand as it.gets thin from shear. If you are cheap, synthetic is NOT for you. Run regular dyno oil and change it every 3k. Fancy filtration aside, the oil itself.gets beat up too much to run it longer although Im sure somebody is doing extended change intervals. That wouldnt work for me so no comment. [/QUOTE]
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