Hi, when I bought Cyril I was told by the PO that he used SAE30 Oil & looking in forums this seemed ok. Just been speaking to a T1/T2 restoration mechanic and he said that's right for a 1600 but my 2Lit should use 10-40 as the 30 is too thick. Has anyone any thoughts on this please, before I replace, my just installed, oil & filter?
I've never used it, but I'm sure it won't kill an engine if used once. I have always used 20w/50 or 20w/40 but as that has become harder to source 15w/40 Castrol Just out of interest though, why is it crap?
Its too thin once hot. The guy I bought mine off used it; the oil light used to flicker at junctions after a run as the pressure dropped. Changed to 1ow50 and its been fine ever since.
Its a mongrade and as said above doesnt cope well at higher engine temps. I used to get a lot more leaks with this and I couldnt swear to it but think the engine runs cooler on the multigrade which are designed for a range of ambient and engine temps.