It'll take a whole range of oilsNo it's Castrol 10 w 40 GPS. I was told by Joe duffy's that thats what she takes.
My prefered is 20W50 IF i can get the correct grade which is getting more difficult so it tends to be 15W50 Semi Synth more often than not these days!
What I tend to "find" is the thinner the oil the higher usage with the big boxers AND the noisier the mechanical noises seem to be!!!
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He he he



