03-26-2009, 05:58 PM
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#3 (permalink)
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Senior Member
Join Date: Nov 2008
Location: Alvin,Tx
Posts: 297
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Quote:
Originally Posted by short_stuff
In the 7.3 l forum, oil brands was a big deal a few years ago. I don't recall it being a 6.0 issue, though. But, yes, different oils (and oil additives), can effect the way the engine behaves. Romping during cold weather and a certain brand of oil was pretty common. I have noticed that big of a deal, but I use either Shell Rotella, Chevron, or Mobil Delvac.
What weight oil did you use when you were using the Rotella? Maybe you went from 30 weight to 40 weight, and it's dragging on the engine more? just a thought.
short_stuff
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I have allways use 15w40 oil in my truck...
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