Quote:
Originally Posted by Bmnorm2
No issues, the oil was still filtered during that time. You just didn't have as much filter material available to fill up with particulates. A normal oil change interval still has life left on the filter under average circumstances. This is an intentional fail safe so that filtering is always adequate. You have absolutely nothing to worry about it.
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Im not so sure about that. Lets say for example the Correct filter is 4 inches tall and the one he put in is 3 inches tall....well the shorter filter will not fill that gap between either the engine or the housing....so you would have oil flowing around the filter. The filter has to be sealed against surfaces on both the top and bottom to have ALL of the oil flow through the filter.
I get what your are saying about total filtration capacity, but i dont think that applies in this case.
If he has truly gone 17k miles with it in this condition, I would get a test done for peace of mind...and its only 35$.
go to amsoil and they have a kit for 34$$
