CK-4 Synthetic SAE 15W-40 Diesel Oil by Lucas Oil at Fleet Farm
Amazon.com: Valvoline Premium Blue One Solution SAE 15W-40 Diesel Engine Oil 1 GA : Automotive
Amazon.com: Stens 051-853 SAE 15W-40 Magnum CK-4 Diesel Oil Compatible With/Replacement For Lucas Oil 10287 Mowers : Automotive
Expo Tech Engineering - A 15W40 engine oil is a multi-grade oil, it is governed by standard SAE J300 specifically for engine oil or motor oil. A 15W or 40W oil means