WARNING [Rear differential oil]

Wonder how long I can drive it if I never change it.

 

Same with 1st Gens. The stealer, when asked directly about what they use for the rear diff which requires straight 90w, says they use

$39 75w-90 GL-5 Limited Slip, Ultra Long Drain 500k Miles, Manual Transmission, Gear/Differential Lubricant (1 Gallon)

75w-90.

 

I had a 2004 GMC with over 230 on it. Never changed anything but the oil. Was still going strong until a drunk guy hit me. I figure the Toyota should hold up even better.

 

From working at the dealer I can tell you the ws transmission fluid usually is dark by 30k miles. Is it bad then? No. But it discolours quick. Pay for a drain and fill. Don’t do a flush because almost all the dealers won’t flush the transmissions because it’s a hassle

 

I had 270k on the original gear oil in my Tacoma when I changed it. Nothing alarming.
The tundra I bought hand to had it changed in 170k and it also looked dark. But nothing alarming

 

Probably 300k miles

 

Plenty of Ti

Yep. This is being blown out of proportion here.

Just follow the maintenance in the owners manual

 

I went to three different parts stores around here and NO ONE has the 75w-85 GL5 stuff. Of course, it's online for 24k gold prices....

 

RedLine makes a 75w85. The Toyota stuff is pricey but really good oil. I’ve delved deep into this rabbit hole..here’s my plug at 10k miles.

 

After the change and when the oil was bad, do another change after 2-300 miles, it will clean the whole stuff oit and therefore you will see your new oil being dity again....

 

Has anyone tried Ravenol in their transfer case? Apparently it's a 75w replacement for the Toyota 08885-81080 (it has Toyota 08885-81081 on the front of the bottle, which is supposedly the European designation for the US 08885-81080) and is a whole lot cheaper at $18.32 per quart on Amazon.

$27 RAVENOL J1C1003 MTF-3 SAE 75W Full Synthetic Gear Oil - 1 Liter for Manual Transmissions, Differentials & Transfer Cases

https://www.amazon.com/gp/product/B00QPCL7ZE/ref=ox_sc_saved_title_1?smid=A3NWHGHN360KCD&psc=1

Dave

 

I haven’t, but I’ve seen VOA of both and the add pack in the Ravenol is very very weak compared to the Toyota 75WLF.

 

Good to know...thanks. In the end, it doesn't make sense to risk a $50K+ truck by trying to save a couple hundred bucks. When the time comes, I'll probably just get the Toyota fluid.

Dave

 

No problem, FYI every Toyota dealer I’ve talked to just uses whatever bulk 75w90 they have in Diffs and T/C. Only time the good stuff gets used is on warranty work. Most of the time the parts guys have no clue what this stuff is. Just didn’t want you to think by just going to a dealer would ensure you’re getting the right stuff. The old school cans probably great for shelf life but are a nuisance.

 

Did you also buy new drain plugs? Also do they use crush washers I’m about todo mine just so I get all the parts before. How many of the old school toyota cans did it take? My dealer said 4?

 

I hit 50K today.

I did a drail and fill on the transmission pan only. Roughly 4 of 12qts. the fluid was not burnt or bad at all. But I figure ill do this every 20K now.

I also did my rear diff at 5000 miles and then again 45000 miles. The Rear is bad, ill continue to do it every 40K. I did the front at 10K but haven't done it again since i don't 4wd very often.

I have not touched the transfer case... It is a very special oil that NO ONE matches and its like $75 a qt or something crazy. So I hope you don't mess up your transfer case since it's not a normal 75W85-90 like the diffs are.

I also trust no one to work on my truck... NO ONE.

 

No, just new steel crush washers for the rear diff. The new borg Warner t/c on the tundra doesn’t use crush washers (npt threads instead). In that photo I posted, I was serving my 15 4Runner. This is the correct sealant for the tundra t/c treads tho..3.8 quarts for the tundra rear diff.