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Hotrodders.com Moderator
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10W30 or 10W40 would be your best bet. There is absolutly no reason to run a straight weight oil except for maybe during engine break in. In a tight (freshly rebuilt ) engine 20w50 can actually hurt you more than helping.
i didnt notice where you were from before I replyed but if you are in a cold reigon 20w50 really sucks on a cold morning. We had a car towed in a few years ago with 20W50 on a 0 degree moring. Would not turn fast enough to start.
 
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