Several Options
When you decide that you want premium engine oil filtering via the bypass setup, there are many different ways to go.
Amsoil, Oilguard, Filtration Systems, Gulf Coast, and more I'm sure. I've looked into most of these. If you contact Marlin at Filtration Systems, he'll send you a CD computer video where they show the FS filter against a full-flow Fleetguard(what's the point?) and an Amsoil bypass filter. While the Amsoil filter is better than the Fleetguard--that's an apples to bananas comparison--the FS is clearly better than the Amsoil (for soot anyway). See it and believe it.
My choice is the Gulf Coast filter. It's very large and very heavy--the cannister is 25# empty. That should make it bullet and rock proof. The GCF uses a roll of Bounty for the element and adds about 6 quarts capacity to your system. Lawrence, my neighbor and TDR member, put one on his 96 truck (stock power) and the oil didn't change colors for 10,000 miles. Then he changed oil to go to synthetic.
I've already converted to synthetic and have blackened that oil thoroughly. I have the Gulf Coast filter, but have been to busy with the 12v to put it on.
I'm going to install it and put the dirty synthetic back into the system and watch it clean up. I plan to run the GCF element until the oil starts getting dark--assuming that it cleans it back up. I think it will. I'll also sample the oil dirty, and then 5k later after bypass filtration.
GCF of Oklahoma is a TDR advertiser--ask for the TDR discount. It should be $375-- $20 off, shipping included.
GCF also has a specific element for those who don't like the paper towel option. There is also a Toilet Paper filter out there. It requires more frequent changing, but filters better than PT.
Any way you go, SOME bypass filtering is better than NO bypass filtering, especially if you're a high mileage kind of driver. Or one who hates oil changes.
Note: DC nor Cummins like extended oil change intervals, so be careful to keep records of samples in case the worst happens. I'm satisfied that well-filtered synthetic is the best thing for my engines. In a few hundred thousand miles, I might be able to tell you for sure.
