They do provide other grades 0w20, 5w20, 5w30, 10w30.
I'm signed up tothe 5K oil change interval but using Mobile 1 0w40 here in the UK.
I've a very slight weep in the RMS area and it was suggested my choice of oil was too light and that something thicker might work I was pondering 5w40.
I see in the Bentley manual it suggests for:
more than 50F/10C it has 10w40, 15w40 & 15W50
less than 50F/10C it has 10w40, 10w30 & 5W30
That made me go hunting for the owners manual - This might be from a 2006 (did it change?)
