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Engine/Transmission (1998.5 - 2002) Spin on fuel filter?

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Engine/Transmission (1994 - 1998) hard starting

Engine/Transmission (1994 - 1998) 3K GSK & Towing?????

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Yes. Do a search on "Prime-Loc" and you will read all kinds of juicy stuff - like a soap opera. My recommendation is BEWARE. I used to have one before it ended up in the city dump.
 
Drag Racer,



If the prime Lock didn't work properly, ( what was the problem you had? ) what are you using now?
 
You will read all about what the problem is from prior posts - flow restriction which some users felt caused VP-44 failure. After reading and researching all of the commentary for many months, I decided to remove it and not take the chance. A rep from Prime-Loc was also involved in many of the posts. You will notice Geno's Garage stopped carrying them for 24V engines as a result of this fiasco.



I went back to the stock filter set-up. It is really not that hard to change, and on the 99s, you can still install 2 fuel pressure gages to read delta P across the filter to monitor when it's time for a filter change (this was really the only other advertised benefit of the Prime-Loc other than easier access).
 
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I dont know much about Prime-Loc units except that they dont seem to do well on 24V's.



But I wouldn't limit yourself to only looking at Prime-Loc. When I look on the shelf at work at all the different fuel filters for Cat, Mack, Detroit, Cummins, Perkins, International engines... I mostly see spin on replacement elements. I like spin on filters because they are easy to use and less messy in my opinion. I really dislike any kind of cartridge filter... either oil or fuel.



Stanadyne, Racor and Napa make nice aftermarket spin on heads... ones that can out filter and out flow the stock ISB filter setup. What could be better than an easy and quick fuel filter change? And how about one that has better filtering, water seperation, and longer life? Its possible and easy really. You can get WIF and heaters to keep the stock features too.



Stanadyne is slightly different in the sense that the filters look like spin on elements but actually push up into place and a lock ring is the threaded part that hold it up there tight. Works great too cause there are no actual threads in the filter... threads which can have burrs that dont get removed during manufacturing. I've seen Fleetguard Stratopore FS1022 spin ons for ISC CAPS injection pumps (very critical to have a good filter) with big ole burrs just hanging on the threads. I carefully inspect all threaded filters before installation.



Anyway Stanadyne makes filter heads with many types of port threads including M12x1. 5 o-ring so a person could adapt banjo fittings. With a simple piece of angle aluminum about any brand of head could easily be mounted in the stock location. The Stanadyne FM100 heads and filters flow 80GPH. You can get filters in 150, 30, 10 and 2 micron ratings. All have water drains in the bottom and WIF capabilities. Filter lengths come in 3, 4, 5, 6 inch lengths. You can also get some in 7" lengths.



I use a Napa filter head on a Cat motor on one of our vol fire trucks. The filters are 6 Micron and are the same size of our Fleetguard oil filter. I also use the same head upstream with a 8 micron seperator filter. Both are good for 45GPH which is basically the same as our stock cartridge units.



TDR member Kyle has converted his to a very nice looking Racor setup in the stock location with all the bells and whistles. Racors are great too and there are many choices in size, microns, and optoins.



Don't mean to toot my horn too loud but I think spin on's are the only way to go. Thats why I use two on my ISB Dodge. The Stanadynes offer me better filtration and are good for 10-15K miles. Cost is about $12 for a replacement. And replacements are also sold by Fleetguard (rebadged Stanadyne units) and called the "Super Filter".
 
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I've aways felt Prime-Loc was a waste of money.

Don't know what would be involved changing over but pre '96 use a spin on filter. When the change happened in '97 Dodge said it was in response to complaints about the old style being hard to service, maybe you're already better off with what you have. Another problem you'll run into is that the filter housing on your truck has the fuel heater incorporated, on the spin on it's a separate unit.
 
Thanks for the reply's and information. I'll check out the other options. I would also prefer a spin on type, if practical!
 
rmrc,



I think this is a picture of HVAC's 24 Valve truck. Notice the Racor spin-on filter. HVAC can probably give you more info.



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