Greetings folks, my youth pastor at my church has an 01 dakota with a 4.7 that has 162000 miles on it and it consumes one quart of oil every two months or 1700 miles. No smoke pcv is new no leaks. He wants to run mobil 1 15w50 in his truck because he thinks his truck is hard on oil. Is 15w50 safe to use or too thick? He parks his truck in a garage all year around. The coldest it gets in winter is upper 30s lower 40s with occasional cold snaps. Drives closley 3000 mi a month
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