Numerous "so called" experts on numerous forums have givin their opinions on the best oil to use for our Coyote engines. Amsoil, Royal Purple, and Mobil 1 seem to dominate as far as brands, but what about weights in this Texas heat?
So what's the favorite around here? 5W-20, 0W-30, or 10W-30?
What oil weight and brand are you guys using?
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