225 oil filter

I pull my drain plug and let it drain overnight and remove the oil filter the next morning after it has cooled down . With the WIX filter there was no oil coming out when you pulled the filter and with the AC Delco there is always oil coming out and going all over the front diff, that is because it has a spring loaded anti- drain back valve to keep oil in the filter for cold start up. What I'm saying is after WIX went to there silicone flap anti -drain back it went to crap just like FRAM did when they sold out. Oil filters do have a bypass if it gets clogged. Get on the net and look up oilfilterguide.com and click on anti-drain back valve and read what it says about it.

 

Here are the inner workings of the AC Delco PF-24.

http://www.bobistheoilguy.com/forums/ubbthreads.php/topics/3323395/New_AC_Delco_PF24_opened_up_%28n