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Old 01-02-2025, 05:23 PM   #1
Mini-Skoolie
 
Join Date: Nov 2022
Location: Jacksonville, FL
Posts: 66
Year: 1999
Coachwork: Thomas
Chassis: International 3800
Engine: DT466E/AT545
Fuel Filter Heater

I have a 1999 DT466E and was thinking about adding a fuel filter heater. I realize most of the time its not needed as the additives take care of the fuel down to about 0 to 10 deg F or so, but got a bit concerned in the case i sat somewhere overnight and it was colder or marginal.

I was struggling to find out where it is and what model of filter housing actually has the heater and how its wired.

I see my harness dangling next to the fuel filter that has the 3 wires in it ( #401 wires 19A, 19B, and 19C) But I am struggling to find the other end that connects on the filter housing.

I have the spin on filter housing that has the strainer and priming "push" pump

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Old 01-02-2025, 05:56 PM   #2
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Join Date: Dec 2021
Location: Davenport, IA
Posts: 691
Year: 2006
Chassis: IC CE300 (PB105)
Engine: DT466e @245hp | Allison 3000PTS
Rated Cap: 66
Can't speak to wiring for a filter heater, but if you use PowerService diesel antigel at its strongest concentration on the instructions its good well below 0.


I never trust what the station has put in for additive so always use the PS at the lower concentration all winter long, and run some at higher concentration during cold spells (usually once or twice a winter here in Iowa). My mechanic recommended I do that about 5 years ago and I've never had a gelled bus since.
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Old 01-02-2025, 10:05 PM   #3
Bus Nut
 
Join Date: May 2023
Location: Canada
Posts: 761
Year: 2001
Coachwork: BlueBird
Chassis: International 3800
Engine: T444E, Allison 2000
Rated Cap: 72
Power service is a good product. I use the silver bottle year round.

I know the white bottle is to prevent gelling but never use it. I guess I've just been lucky to not have a problem.

We were also using kleen-flo diesel fuel conditioner at the bus garage. The director had a hard on for power service(because it was Cummins approved or something) so we were going to switch over to it but I left. We never had a freeze up situation after running kleen-flo
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Old 01-03-2025, 08:20 AM   #4
Bus Geek
 
Join Date: May 2009
Location: Columbus Ohio
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Year: 1991
Coachwork: Carpenter
Chassis: International 3800
Engine: DTA360 / MT643
Rated Cap: 7 Row Handicap
I use gray bottle in warm months and the white when its going to be below zero.. its been decades since ive had diesel actually gel.. modern diesel if filled and cycles anytime in the fall is much better than the old days at being winter-ready..



one of the issues that occurs with rarely driven vehicles like many skoolies is the fact they get filled in spring and summer and only have a few gallons added here and there if driven in the fall. go to take it up in winter and it may only have total of 1/3 tank of winterized diesel vs summer fuel.... adding some white bittle power servicei n the fall then driving it is a good way to keep the fuel ready if you choose to drive in cold weather.
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Old 01-03-2025, 11:12 AM   #5
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Join Date: May 2014
Location: West Ohio
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What filter/water separator do you have? Both davco and parker have heater options, they're useful to prevent wax plugging of the filter media. We had issues with it last year, on brand new buses, because they omitted installing the fuse for the fuel heater and drier heater.
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Old 01-03-2025, 02:00 PM   #6
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Join Date: Jun 2016
Location: Orange County, CA
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Year: 1990
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When I had my engine rebuilt I also replaced my old Racor 900FG fuel filter/water separator with a 900FH, not just because the FG's bowl was almost opaque and its Water-In-Fuel probe was broken, but also because the FH has connections for a water heater plate that I bought separately. I have it powered by the same 60A feed that will also power my soon-to-be second radiator's four electric fans and coolant booster pump - the feed's Blue Sea switch can be On for either the fuel heater or the second radiator, but obviously not both at the same time. Do I plan on being somewhere so cold I need a fuel heater: heck no, but sometimes things don't go to plan, so I'd rather be safe than sorry. Or as the Scouts say, Be Prepared. I also installed a block heater in the engine, again "Just In Case"...

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Old 01-12-2025, 01:08 AM   #7
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Join Date: Jan 2024
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One way is to put baby diapers on filters & duct tape around diapers to
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