Medium and Heavy Trucks
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hi im alex, could i get your engine serial number please
have you had an oil analysis? oil level stays the same or goes down overtime?
and you have always run this oil with this additive?
what is oil pressure cold and hot?
Ok that's good , do you have any other concerns? Usually bubbles form when the oil is to thick, that shouldn't really be a problem with 5w40 Cummins doesn't recommend using any additives so can't not really sure about that part of it