- Joined
- Dec 7, 2020
- Posts
- 6,888
- Reaction score
- 17,431
- Location
- Minneapolis, MN
- Ram Year
- 2017 2500 Laramie Crew Cab
- Engine
- 6.4L HEMI
I'm happy using oversize Royal Purple (unless their new owner starts going cheapo), but I'm bothered by the visible degradation of previous gen Fram Ultra XG media. Sure seems to indicate cellulose (paper) is involved? Or maybe it is polypropylene fiber, which hardens (cross-links) and degrades with heat or UV exposure? They've cheapened my house water sediment filter the same way by changing from glass fiber to polypropylene fiber, but house water application isn't anywhere near as harsh as engine lube oil.
Fram never advertised Ultra XG as anything other than all-synthetic media. I've already reported Fram's new media has TWO synthetic layers instead of one with a wire mesh retainer. I suspect they are staged efficiency layers.
Because I use Fram for some of my other weird engines. Got a lot of engines around with two sons.
Fram never advertised Ultra XG as anything other than all-synthetic media. I've already reported Fram's new media has TWO synthetic layers instead of one with a wire mesh retainer. I suspect they are staged efficiency layers.
Because I use Fram for some of my other weird engines. Got a lot of engines around with two sons.