90wt smell
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Joined: Aug 2003
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From: Isanti, MN
Could be burning brakes, it's an acrid smell that isn't that dissimilar from gear oil. Have you checked for a sticking caliper?
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Joined: Jun 2007
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From: Carvel, AB, Canada
I've had a similar issue with my 06. It was the rear axles seals leaking. They leak ever so slightly and it seeps into the park brake assembly on the inside of the rear rotors. The heavier load you pull, the stronger the smell. There were no drops onto the ground, just a very small streak on the rear hub.
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Senior User
Joined: Dec 2004
Posts: 143
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From: Kenner, Louisiana
Ill have to pull the rotors and check that out. I only get this smell once in a while then only for a few seconds.
I have been running in 4 hi in the rain since my "limited slip" sucks ***. I dont go over 65 in 4wd. I hope that hasnt caused a leak.
Im also runni g an h and s tuner. Ive only made 3 passes in the truck so i wouldnt think the pinoon seals would be slowly leaking. That and i dont see any fliid.
This started about 1k miles ago after my last oil change and rotate.
I have been running in 4 hi in the rain since my "limited slip" sucks ***. I dont go over 65 in 4wd. I hope that hasnt caused a leak.
Im also runni g an h and s tuner. Ive only made 3 passes in the truck so i wouldnt think the pinoon seals would be slowly leaking. That and i dont see any fliid.
This started about 1k miles ago after my last oil change and rotate.
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Check the left frame rail roughly under the driver's seat, the front axle breather is located up there (follow the hose to the diff), and if you've been running in 4WD on moderate traction roads you may well have overheated the front diff and caused some oil to puke out of the breather.
These trucks are 4WD, not AWD and do not have a center differential so unless the road is *really* slippery things will bind up and overheat. I cooked my front diff driving an extended distance in 4HI in *6" of slush* on the highway, and slush is far lower traction than rain.
These trucks are 4WD, not AWD and do not have a center differential so unless the road is *really* slippery things will bind up and overheat. I cooked my front diff driving an extended distance in 4HI in *6" of slush* on the highway, and slush is far lower traction than rain.
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