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Power Strokes
Aftermarket Super Duty 1999 - Current
Synthetic Oil Discussion
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[QUOTE="jdc753, post: 180499, member: 52"] I ended up going for 1,000 miles on it but after changing it out back to the 15w40 dino premium blue which the truck had for the previous 40k it still wasn't right, 5k later I ended up getting 6 new injectors just before the warranty ran out. That was about 70k ago and everythings been fine. It was a while back, and I could never find the synthetic premium blue so I just stick with the cheap dino valvoline and truck has been happy. Before I did the Schaeffer's stuff I had already had up to 3 dead cylinders on real cold starts so I know the schaeffer's wasn't 100% at fault but it definitely was the nail in the coffin. [/QUOTE]
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Aftermarket Super Duty 1999 - Current
Synthetic Oil Discussion
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