what oil to use

OK NOT TO STIR UP THE POT BUT------ i just watched a show called how its made,,,,low and behold it was a story on the making of auto oil filters,,,,

and the brand showed,,FRAM,,, only card board was the inner filter,with a metal mesh tube screen to support the paper filter,both end caps were sealed with a sealant, and the ends welded to the drain back plate and screw on plate,
didnt see any card board end caps,,and it was the standard orange filter,not a tough guard

just passing along what i witnessed