I changed my oil and filter the other day and when I spun off the old oil filter I was happy I did not spill a drop. Then I noticed it was only half full. I have never seen that before. Any ideas why?

 

cooling and syphon will pull oil out of some filters.

 

Thanks Dozer, had the same thing on my last oil change and was wondering as well.

 

Mine will do that on occasion if I let it sit too long after I shut it down. I usually try to change when hot.

 

not many engines do that, Volvo loaders do it as well, i like it that way!

 

Both my 2000 5.9 and now the 6.7 does it every time I change oil.. Mind you my oil change ritual take 24 hours. I let it drain for a day and right before I put in the oil I spin in off and every time its only half full.

 

Same here, I always pull the drain plug when hot and let it drain. Then I wait till the engine is cooled off, and the oil level is far enough down the filter so that I can remove it without any drips.

 

Thanks for all the replies. I was a bit concerned when I noticed it. I'll just keep an eye on things for now. Thanks again fellas.