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					Originally Posted by Slate 01  Good to know, thanks.
 Are there any particular brands you do suggest and weight? Like I said I have a 2001 Base with 43K miles and not replaced the IMS. I live in California and we have very mild winters (that is even a stretch, rarely hits freezing, and I actually rarely drive it in the winter, only on trips to the coast).  Appreciate any help on this matter.
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I would not go any lighter than a 5W-40, prefering a 10W-40 in warm climates due to improved film strenghts.  I would also focus on ZDDP content.
There are several brands worth looking at, in cluding Joe Gibbs, Motul, Castrol, and even some of the Shell Rotella's.