*waits for bludger's entry*Originally Posted by Super-DA9
i also use 15w-50 in my dc2. just so you know, it's no thicker then a 15w-40, which is a medium viscosity oil. the 50 means it has a better film strength.
it's normal for a lot of engines from the 90's to run 15w, as they have a bit of age on them. and it's only one step up from FEO which is 10w.
it's not as thick as some are stating. for those of you that may not understand how oil reads, the first number with the "w" is the thickness, and the second number only represents the film strength. you could use a 10w-70 and it wouldn't be any thicker then a 10w-30, only stronger.
also if someone can tell me exactly how a 15w oil can do actual internal damage or more wear then an oil that's too thin, with a provided example. please go ahead, as I can't understand why this would happen.
the only disadvantage I can think of for a slightly thicker oil is slightly less power (maybe -4kw max) and slightly worse fuel economy.
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