I changed mine out to RP Gear Oil at I believe 10k? And at 10k it was very dirty, I'd imagine people going up to 18-20k are running some high-risk of premature wear\damage.
check your differential fluid!!!!
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Crap-never checked the first one, flipped it on a bridge overpass @33k doing 70, but it never complained-lots of mud in its past, just like the present one.That incident is the reason I BOUGHT A 2ND ONE, as the crash involved 3 guard rail impacts, with a 47'(state police measured)flight and inverted landing(rear pillars remained intact, and I walked with stiches and staples)-lotsa rain.Just checked my rear third member fluid....UGLY. Will flush and replace-though this IS the one that sees the constant force applied function, but, oil spotting on towels left lots of metal.... but, I got faith(thats the reason I mentioned the crash) and suspect that is mostly break in metal, and the dark color is temp induced.Anybody done the 4:56 thing with the same results?3:73 probably puts a higher concentration
of as$ to the metal, especially if you've slapped bigger rolling stock aboard.Mine is currently @ 16k-but it has been pushing 35" tires and has seen lotsa mud(high temps accordingly)so what looks ugly may be just usage and stock fluid reaction to force and temperature.More money going to royal purple prods.....
of as$ to the metal, especially if you've slapped bigger rolling stock aboard.Mine is currently @ 16k-but it has been pushing 35" tires and has seen lotsa mud(high temps accordingly)so what looks ugly may be just usage and stock fluid reaction to force and temperature.More money going to royal purple prods.....
just changed out my front and rear diffs to royal purple at 13500 miles both front and rear diffs had black fliud with shavings in it. Supposedly royal purple will also decrease the running temp of the gears...we will see.
RP has kick A$$ gear oil. When I changed mine out I instantly noticed a difference. I'm going to assume you have a manual if your front differential had black fluid in it.
Front diff spins all the time on both the AT and MT since the CV shafts are always turning with the wheels
For sure nothing to worry about because it is a Toyota. Going into the dealership and them letting me know how easy it was to do it myself...they suggested that if driven hard to change every 30k miles. I don't think they were just saying that, because they knew I wasn't gonna pay them to do it. Just the life blood of the truck, so its prolly a good idea to change it. With that said, I'm gonna have a booger of a time with the front diff. I stripped the allen bolt
have i said i love my dealership yet? went up to ask a question about some parts i ordered. my advisor asked if i would be there for a minute. told him yep and threw him the keys. he took my truck to the back, got the bolt off, replaced it and went ahead and filled with RP. NO BILL!!
ya i do have a MT and i have noticed a difference since i added RP...im due for an oil change in 2000 miles and im switchin to RP oil and while i have it on the lift im going to go ahead and do the tranny and xfer case as well.