That's the way I've always understood it. That's why I've always used 20W50 ----- Original Message ----- From: "Sebastian Liberona" <smash593@shaw.ca> > isnt the stock recommendation 20w50? thats what it says in the bentley, > depending on the temperature in your area, and in summer for sure unless you > live in way north canada ( like me ) heheh i dont think 10w30 is > recommended. >