Quote: On a BB you'll be lucky to get it 1/4 filled. Take the filter and lay it on your bench and you'll see that the oil will drain right out of the outer row of holes.
Boy are you slow installing the filter. Sure you will spill some but if you are quick it will be minimal and most will still be in the filer after you get it spun on. I have seen air locked filers that were not prefilled but never seen one air lock that was prefilled and this is on big block engines too. Have also heard chirping on some engines that for one reason or another took a little longer than others to fill. There is a definite difference in the rate that pressure build with and without filling. have witnessed it time and again. do what you please it is your engine and your oil and you $$$. I will continue to prefill always have and always will on my own and did on customer vehicles when I worked at the dealership and this was back in the day.
