Rolled into the driveway about 750 miles overdue on oil change. It was late into the day and I needed to run in the AM. I have the no spill valve on the oil pan so the oil can be safely dumped hot. I was debating what to do about the hot filter when an idea poped into the head. Poke a hole into the filter and blow a shot of compressed air into to displace some of the hot oil. I tried it and see no ill effects. The empty tin can cooled in the time it took to remove the airbox elbow. The filter was removed without any mess or being too hot to handle.
Looks like I have a new procedure for oil changes.

 

i changed mine today on a 99 i never remove the air box. i work on them all day semis that is,. always drain out the filter. never put any compressed air in there though. guess never thought about it. good job though.

 

Where are you blowing the compressed air in?
Are you blowing the oil OUT of the filter back into the engine or
Are you blowing it OUT of the hole in the filter?

I worked on some Mep-003a military gensets where they used compressed air to empty the crankcase and they blew out the seals in the process.

Punching a hole in the end to let it drain is a good idea then stick a sheetmetal screw in it so it doesn’t run down your arm.

Jim

 

Aren't you blowing all the gunk back into the engine that has been filtered out?

Try this, it's what I do. Enclose it in a plastic shopping bag. We call them Walmart bags. As the filter drops off the threads, grab the handle loops of the bag and cart it away. You do need to make sure you choose a bag with no holes.

From there, it goes onto a funnel to drain into my used oil container.

 

It also works great with a 1-gallon ziplock bag. And they are sealed!

Tony

 

Ahhhh, come one guys ..... changing oil filters is just like eating one of dad's famous "hot off the grill" hamburgers. He always used to say ..."If it ain't runnin' down your arm and dribblin' on the floor, then it ain't worth the effort".


I would assume that Electrifried is blowing the air down through the fill tube ... thus forcing the air OUT of the little hole in the filter. Just keep the air pressure fairly low to protect the seals / gaskets.

PISTOL

 

way too much work. i just grab a 1 gal ziplock bag, put it up around the filter. losen the filter with a wrench then spin it off by hand the rest of the way. all the oil and filter drop right in and you just seal it up.

no, you cant do it with the oil scalding hot, but i normally let the pan drain and go inside for lunch or something while it all cools down considerably

 

The air was blown thru a hole in the side of the filter near the crimped ring. this should have blown most of the oil thru the filter in the same way it would be pumped in normal use. The dirty oil should not have been able to go back into the engine as the oil pump would not let much pass thru. A small ammount probably passed the bypass valve.

Remember this was done HOT and I didnot have time for natural cooling. The prefered way is still drain the pan overnight and mess with the filter in the morning.

 

I've always just poked the hole in em, well not always, I learned that trick the first time I took an oil filter off a N14 Cummins...long story short, big mess, so from then on, I always poke a hole in big filters.