Inverted oil filter on 496 ho engine?
 

I heard of a little trick when changing engine oil to keep it from dripping alot in the bilge? can anyone explain how to do it?

:food-smiley-007::food-smiley-007::food-smiley-007::food-smiley-007:

Poke a hole in the center on the top.

+1

do you poke the hole before draining the oil or during ?

Don't have a 496 but my last boat had the filter "upside down". Do NOT buy the filter with the anti drain-back gasket inside. After a quart or 2 have drained I simply punch an air hole in the top/center of the filter with a flat head and wait a bit. The oil in the filter runs down out the pan with the rest of the oil. When you remove the filter there are a couple drops of oil to deal with but that's it.

I only buy filters WITH the anti-drain valve. Else, you have a longer dry start period.

I have a "special" screwdriver that is the exact length of the oil filter, NOT long enough to damage the filter housing. It's sharpened to a point, and I pound it in with a small hammer, all then push it all the way through the oil filter.

I usually open the oil drain tubes and poke the filter holes, and leave it overnight. Then come back and fill it the next day.

Several threads on this topic in the past, one of them yours Tony. :D

http://www.offshoreonly.com/forums/g...ter-trick.html
http://www.offshoreonly.com/forums/g...king-mess.html
http://www.offshoreonly.com/forums/g...ter-trick.html
http://www.offshoreonly.com/forums/f...-question.html
http://www.offshoreonly.com/forums/g...l-filters.html

So you actually poke a hole in the anti drain-back gasket when you poke that hole? That would provide better protection when the boat was cold started, I simply bought filters without them.....but I also had pre-lubers so I had oil to the cylinder walls before I even turned the key.

brian your right one of the threads is mine lol!! I must keep forgetting from season to season the correct sequence .

Do not poke a hole in the oil filter, unsrew it a couple turns just before it leaks oil out. let it sit overnite while you drain the motor oil out the oil drain hose - next day the oil filter will be empty on its own.

Poking a hole in the center of any oil filter runs the risk of the broken metel to drain back into any oil passage. Heard of 2 cases where this has happen and caused engine failures from poking the holes in the oil fitter.

Anyways I already know the replies on this as many will say hogwash " I''ve been poking a hole in the oil filter for years and never had a problem. Can you account for any of the broken metal after you slam a hole into your oil filter ? I'd rather not take the chance.

This alone makes total sense not to poke a hole in the oil filter to help drain it because you do not want a mess but rather have maybe a small piece of oil filter metel drain back in a oil passage or oil hose / line. The center hole of the oil filter is the outlet side after filtering.

Next easy way is you can wrap an oil diaper something like pigmat or 3 m oil absorber towel (in which we use) around the base of the oil filter and finish unscrewing it - barely any mess, just my 2 cents.