Quote:
Originally Posted by 280E
My first thought is that the '50' weight is a bit too high for the engine when at normal temperature, but might benefit this higher-mileage engine.
10W40 semi-synth seems like most people's choice, which I have no problem with - probably just a bit of 'Scrooge McDuck' creeping in....  |
In terms of 'weight' of the oil I've come round to the way of thinking that the significant figure for that is the lower one, the 5w means it's light enough to flow well even when cold, the 50 means it won't turn to water when the engine gets hot. The 10w 40 would meet spec and 10 is thin enough to flow at UK winter temps with 40 strong enough for summer temps.
I think there's still a lot in our collective psyche that doesn't appreciate the science in modern multigrades, it defies our instinctive understanding of oils, fats and waxes, how can one oil be thin enough when cold and thick enough when hot? It's witchcraft!
