I've been using the "Diesel/Turbo" 5-40 synth. And with 231K on the clock, I thought long and hard about the 5, and not the 15 we're used to with dino diesel. Still, cold start protection is what I'm after = 5-40 synthetic diesel blend motor oil.
I bought the Mob1 since Wally World didnt have the Rotella ( its like $5-6 more). I saw the Rotella synth at Tractor Supply.
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