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Of course it does, I think he thought the 15w was the hot number and the 40 was the cold, because oil gets thinner when hot so that meant it was a 15 hot and thicker cold, so it’s 40

Yea he was trying to be helpful. He wasn’t rude or mean about it

Please tell him that lol

I think he was thinking that since the oil is thinner when hot, that means it’s a 15w and thicker when cold, that’s the 40.

Oh he’s wasn’t getting that technical about it. He basically was saying that all oils get thin when hot.

I bought a quart of rotella 15-40 for my lawn mower and he started to argue with me about the thickness of the oil. I said the 15 is the viscosity of the oil in cold and the 40 is the weight at operating temp. He said he’s changed thousands of gallons of oil and oil is always thinner when hot...

What chemicals should a guy have in the shop for lubricating, penetrating oil, degreaser, cleaning etc? if you were to go on Amazon right now, what line up of chemicals would you buy to have in the shop for those basic metal tasks etc?