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Power Strokes
94-97 Tech
Synthetic oil question
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[QUOTE="freddie, post: 125699, member: 216"] I switched from Rotella 15W40 to Amsoil 5W50, then to Schaeffer 5W40 (much cheaper than Amsoil and its still full synthetic 5W40) I don't have any more leaks than I did before either lol I have the Amsoil bypass filter kit on it. I switched to 5W40 because my truck would start in much colder temperatures than it would with 15W40 (not plugged in). Not only would it actually start at colder temperatures, it ran MUCH smoother at those cold temperatures when the engine was cold. I think it was a huge improvement, and well worth it! [/QUOTE]
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