Quote:
Originally Posted by RanchoRunner
Just an FYI: I installed a rear diff breather in my '07 FJC, running it inside the jack compartment like Doozi....be aware that when the rear diff heats up (like climbing in the mountains, or towing), you will get the gear oil odor in the passenger compartment. I used a small Spectre cone-type breather filter from AutoZone at the terminus, as was done by a number of other FJC owners.
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You do get some gear oil odor in the passenger compartment on longer drives. I noticed it on a 2200-mile road trip to the Midwest. Obviously, we ran into some humid conditions so I had the "Recirc" button on with the AC and noticed the smell... turning the "Recirc" off to pull in outside air almost immediately got rid of the smell. Aside from that trip, I've never noticed it.
