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Amsoil questions
First off, let me say this site is awesome, been reading for a while, lots of great info, first post.
Here's my problem. I have an 02 E350, 4x4, 7.3 with a superchip tuner, amsoil 15w40. Recently I was driving on the highway, temps around 85, hilly terrain, while cresting a long hill the CEL came on and shortly the truck lost power. I pulled off the road and the truck idled rough and I shut it off for a little bit. After 15 minutes I started it up and the same rough idle. I plugged in the tuner and pulled a P1211 code. After sitting for 2 hours and a 1 hour tow the truck started and ran fine. I called my brother, a GM mechanic, who researched the problem. What he found was that the oil foamed and possibly affected the fuel injection. He suggested I change to regular dino asap. I changed the oil and didn't have any problems on the return trip or since then.
Has anyone had this problem and what are the fixes if I want to continue to run amsoil?
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