Good Day! Found a box of STP "S3980" oil filters at the flea market for only $2 each.Bought six-as they fit my 97 4.3. Should I use these or dump them? The price was right,but are these any good? And just who made them? I usually change oil at 4-5K as my usage is highway speed in non-dusty conditions. 190K on this engine with no issues-usually use purolator gold,but the $6 per cost is putting me off-What say you? Thanks to all for a great forum! step66

 

STP Oil Filter - Cut open - Bob Is The Oil Guy