Finally got around to changing front diff fluid today. Didn't realize there would be a green o-ring on the drain plug. Didn't see anything about it in the service manual or online write-ups. I suppose that's a HNBR o-ring, but I just used a 3/4" black rubber Danco o-ring from the plumbing dept. of Home Depot. I know regular O-rings have been suggested for the oil pan plug, so do you think it's ok for the diff as well? Thanks in adavance!

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David T.
**DEAD**2005 CRD Limited 4X4 - Stone White **DEAD**
116,000 miles
RRO Rockfather Deluxe Lift (OME/KYB GR-2/RRO)
GDE Eco Tune
SAMCO Sport CAC Hoses
Hayden Fan Clutch
Updated Litens Serpentine Tensioner
European Graf Water Pump
Nitro Rear Diff Cover w/Lubelocker Gasket

If the material is the same that is used on the engine then it should also work on the diff. use it then look where you park for drips. You should be doing that anyway. If the oil eats it up you would know then you can worry about it.

Agreed...I think I'll just keep an eye on it. After a little research on the subject, it appears the green O-rings are a little more chemical and temp resistant, but I think the standard o-ring will be fine, as they are also somewhat chemical resistant. If a leak develops, I'm sure it will be minor. I really hate the smell of diff fluid, though. Brings back horrible memories of a 700 mile trip where my diff breather came off my old truck. Sprayed fluid all over the back of my truck, and it smelled for two years. Luckily, my diff survived the trip, but oh.....that smell.....horrible....

_________________
David T.
**DEAD**2005 CRD Limited 4X4 - Stone White **DEAD**
116,000 miles
RRO Rockfather Deluxe Lift (OME/KYB GR-2/RRO)
GDE Eco Tune
SAMCO Sport CAC Hoses
Hayden Fan Clutch
Updated Litens Serpentine Tensioner
European Graf Water Pump
Nitro Rear Diff Cover w/Lubelocker Gasket

The only chemical those generic o'rings are resistant to is H2O with chlorine bug-killer - 'nuther words: drinking water

They're usually for faucet and commode-valve repair with bees-wax lubricant

Best to keep an eye or two and a nostril or so on that drain-plug, eh...............

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'05 CRD Limited
Pricol EGT, Boost
GDE Hot '11; EDGE Trail switched
SEGR; Provent; Magnaflow;
Suncoast T\C, Transgo Tow'n'Go switch;
Cummins LP module, Fleetguard filter, Filterminder
2.5" Daystar f, OME r; Ranchos; K80767's, Al's lifted uppers
Rubicons, 2.55 Goodyears
Four in a row really makes it go