diesel steve
Veteran Member
I did not know where to post this question. What oil filter is good and what filter is poor quality? I think many people use the Mann filter but I am curious about the Mobil MI-301,Purolator L30257 and Hastings LF-517. I have read some negative things about the Mobil and Purolator filters. The stamped spring at the bottom that holds the filtering material instead of a coil spring like the Hastings has so all the oil gets filtered and doesn't get bypassed like a relief valve.