Half are saying it is too much work and the other half are saying too little.
I have a series 9 Setrab and it isn't removable without pulling the bumper... is it doable, of course... would I rather avoid it, yes.
I really am not keen on leaving the old oil in there regardless of how diluted it will be... just not my thing.
There is a difference between being lazy and being efficient... you can change your oil more effectively by dropping the oil pan every 3k miles to make sure you get all the sediment and old sludge off the bottom but no one does that because it is seen as unnecessary additional time and labor. I just don't get how someone would assume that it is "lazy" to want to drain an oil cooler without pulling the bumper... to me the lazy ones are the ones that say "it will just eventually mix its way out of the system".
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