Evening.Had my tuscan serviced at straight six recently, i have forgotten what oil they have used.It says mobil 3000 on the reciept but not what grade it is.Cheers
Used to be 0W 40, then I think it was Power(?) who recommended 10W 40 for their rebuilds. Check with Str8six though but as long as you're checking the level regularly wouldn't worry too much.