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oil for MN winter
Would I be Ok to run 15-40 all year round in Minnesota? It gets balls ars cold here, but my truck will always be inside and plugged in wherever it sits. Its time for an oil change now and I dont want to run a lighter oil yet because its not all that cold yet. I also DONT want to run 5-40 rotella synthetic, I think synthetics are a waste of my $$$. Would I be ok running a 10-30 if its still 60's outside or just run the heavy stuff all the time? Thanks
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