Originally Posted By: Airycat
I have some STP brand oil filters that a frend of mine gave me 20 years ago when he sold his Jiffy Lube shop. I have been using them and I want to know if they're still OK to use?
Why not, as long as you see no rust in them.
If they are that old, they well be the pre-Champion Lee filters that wound up being Champion, K&N, Mobil, and some others these days.
If I recall they had a conventional pleated cellulose inner filter with a wrap of larger particle material around them, and were called "STP double filters" or something along those lines.