would it be a advantage to turn up the high and low idle on my 94 p1700

 

Just a reminder for all of you who have a CR engine to make sure you use a 7 micron or small filter and not the 10 many places still sell. In case you didn't know Cummins starting in June of 2006 wanted all CR engine to use the new 7 micron fuel filter not just the 2006 and up engines. In fact one person found a better filter then the Fleetguard fuel filter, the Baldwin PF7977.

I'll post his word for all to read.

The info below was made possible by a lot of research by ah64id at dieseltruckresource.com.

So after reading a few threads on fuel filters and getting conflicting information I did some more research. As it stands right now I can only find 2 fuel filters that meet current CR specs. Fleetguard, (Cummins/Mopar) and Baldwin. Wix isn’t close and Donaldson isn’t.

Current specs, based on TSB 14-007-06 5.9 CR motors require a 7 micron absolute filter. While the TSB only talks about MY06-07 I called several dealerships and asked for fuel filter PN's for older than 06 trucks, all come up with 68001914AA, the new 7-micron absolute filter. So the searching began.



The Fleetguard FS18000E is absolute at 7 microns (96% efficient at 5 microns) but the gasket isn’t ULSD compatible, so use FS19856 (same filter different gasket)...this is the OEM filter. Has a 14 gr. dirt holding capacity


Baldwin PF7977 is nominal at 1-2 microns and absolute at 5 microns, has a 24gr dirt holding capacity.

Donaldson lists P550785 is absolute at 10 microns.

The WIX 33585XE is nominal at 7 microns. 33585 is nominal at 10 microns.

I am sure there are other filters being used but those are the big ones I know of.


Absolute is 98.7% efficiency and nominal is 50% efficiency.

I have also read, but not verified, that Bosch specs a 5-micron filter for the CP3, and that GM now uses a 2-micron filter.

 

Fleet guard changed all their filters some time ago to account for the ULSD. I have lots of the new ones that work as Canada has been on ULSD for about 18 months now.

Fitration on the new computer controlled trucks is 100% important. the use of multiple step down filters is key to the success of the process.

 

As for me I'v been using solely Fleetguard filters now for the life of the truck. My fuel filter is change every other oil change 12K miles. As for high idle I got the software from the Smarty and sometime soon I'll build a high idle switch for mine for the cold start mornings...

Here is my design on that...
High Idle