Quote:
Originally Posted by Chriztofor
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Thanks!
I think changing after treatment is all relative. If you do more highway miles where you can heat the oil up for long periods, I don't think changing the oil after treatment is as important. Highway miles are known to the best and easiest miles for an engine.
I would think that for cars that see mostly short trips or city traffic etc. where the car idles quite a bit (causing fuel saturation), it is probably better to change after treatment. The thought being that since the oil is challenged by the harsh usage to begin with, mixing in deposits from the cleaner isn't going to help matters.
In my case, I'm a mix Highway/City so I err on the safe side. Not to mention my previous bad oil report.