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That was true of cars running 10-30 or 20-50. Most anything today has tighter tolerance and thinner oils so after a couple of minutes running, you have everything lubed. Ever see 5-30 on a cold morning? And my F250 takes 20 miles to warm and we're at 160k miles.
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casual notes from the underground:There are some "experts" out there that in reality don't have a clue as to what they are doing.
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