15W40
15w40 is thicker at all temps vs 10w30.
It could be.
10w30 is thicker than 5w20
20W50 is the " thicker " oil
Gas 10w30 Diesel 15w40
10w30 or 15w40
15 is thicker oil and for bigger engines.
mine takes 15w40 in the summer and 10w30 in the winter
Gas 10w30 Diesel 15w40
15 is thicker oil and for bigger engines.
5w30 or 10w30 for a gas engine, 15w40 for a diesel
Gas engine 10w30 Diesel engine 15w40