Your not being an idiot. The filter does drain back unless you put an pipe
inside of the oil filter. The filter base (on the engine) has a depression that
will accept an aluminum pipe with about a 1/2" ID. I would measure mine, but it
is inside of the filter. That pipe keeps things from draining back into the
engine. Or at least that is the theory.
Tom
69 2000
Portland
WBoyd1959@aol.com wrote:
> I have the "modern" spin on type oil filter in my 1600 and got to thinking
> that since it sits vertically (almost), it must drain after the engine shuts
> down.
>
> If this is the case, doesn't the oil pump have to fill up the filter every
> time the engine starts before oil is pumped to the rest of the motor? If
> this is the case, it is not a good thing..........
>
> I have changed the filter before, and it doesn't dump a bunch of oil on me
> when I unscrew it, so it is pretty empty. If there was some kind of check
> valve I am guessing that the filter would be at least partially full?
>
> Am I being an idiot here, or do I need to do something before I fry a newly
> rebuilt engine?
>
> Thanks
>
> Bill Boyd
> Riverside, Ca
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