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Originally Posted by danyl55
ask a simple question and you get a................
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Originally Posted by JFP in PA
We prefer the Castrol Syntec over the Redline; in all but the extreme cold I would use 10W-40, if you live and drive in the Arctic, possibly the 5W-40, but you will need to change the lighter weight at no more than 5K miles, while the 10W-40 can go up to 7,500 in most street applications.
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Can't answer your question any better. And if you were expecting a simple answer to this question, you haven't spent much time on these forums. There are hundreds of threads on this topic. This one at least gives some technical background to those that might have the interest.