Fuel Filter Change - Chevy and GMC Duramax Diesel Forum
01-04.5 LB7 Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

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post #1 of 6 (permalink) Old 07-18-2010, 04:53 PM Thread Starter
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Fuel Filter Change

I am changing the fuel filter on my 2002 Duramax for the first time and am not sure what type of lube I can use on the o-rings? I went to Autozone and Advanced Auto and they looked at me like I was crazy when I asked for o-ring lube. If anyone can help that would be great.

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post #2 of 6 (permalink) Old 07-18-2010, 05:08 PM
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Alot of people just rub alittle diesel fuel on it.

2003 GMC Sierra SLT CC/SB. Loaded interior, autometer gauges, ATS E-POWER, Ported fuel fitings, CP3 mod, Intake horn mode, PPE Boost valve, Rapid Flow intake, Straight piped with 6 inch tip, High idle, 20x8.5 KMC Black D-Backs with 275/55/20 Cooper Zeon ltz, Tinted windows, Step tubes, Bed rail caps with bed tubes, adding more all the time. Decked out with LEDs for the fire department. Saving for trans and a few more goodies.:rockin
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post #3 of 6 (permalink) Old 07-18-2010, 05:12 PM
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I am surprised they did not send you to the drug store for KY gel!

Most anything will help-- I use a dab of wheel bearing grease in the O-Ring groove to help hold the O-Ring in place and a little on the top. This is to keep the O-Ring from rolling and coming out of the groove when you tighten the filter. Also a little in the center seal to help it slide over the nipple.

Some just use a little diesel fuel!

Not a good idea to fill the new filter with diesel-- you will send un-filtered fuel to the injector system!

Chevy 04.5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, de-badged, 65 Gallon replacement Aero tank, LBZ-mp, Kennedy pump, shimmed, Pre-fuel filter, tow mirrors, BU cam, gauges, GPS, Sirius, bags, custom grille, fender vents, HD trans cooler- Curt front hitch, footwell lights, load lights, Studs, head gaskets.
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post #4 of 6 (permalink) Old 07-19-2010, 01:29 PM
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Just rub a little diesel fuel on the o-rings, thats all you need.
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post #5 of 6 (permalink) Old 07-19-2010, 02:29 PM
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I've used a little but of vaseline on the 0-ring... never had an issue.

- Albert
05 2500HD Duramax/Allison LLY, SB, CC, 4X4. EGR plate, finger stick, K&N Air Filter, Hypertech Max Energy, 285's.

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post #6 of 6 (permalink) Old 07-19-2010, 10:59 PM
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I use a little carburetor cleaner on the O ring. Slides right on!

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