Ravenol Diff/Transfer Fluid - Toyota 4Runner Forum

Buckaroo · 02-12-2023, 03:42 PM

2005 Limited V6 4WD. Want to change out fluid in front/rear diff and transfer case. Intend to use Ravenol and was thinking that 75W-90 GL 4/5 J1C1109 would be the flavor of choice for both the diffs and the transfer case. When I look at their recommended kit, it include the 75W-85 LS product which is for limited slip differentials (I think). I have a Limited with a locking center diff so was thinking this was not the right product for me. Does anyone have experience with Ravenol product line?

aemravan · 02-13-2023, 09:18 AM

Never heard of them.. but to be quite honest, I don't see why you'd go with anything different than 85w140 Lucas gear oil.

ECGS uses and recommends this in all of the their diffs they build. No need to reinvent the wheel as far as I'm concerned.. it runs cooler and thicker than your conventional synthetic oil, can be readily bought at just about any local auto parts store, and at least in my area here it's probably a good 40% cheaper. ..

Been running it ever since I re-geared and had lockers put in 2 years ago..

Buckaroo · 02-13-2023, 09:54 AM

I started using Ravenol when looking for transfer case fluid for my 2017 Tundra - Toyota's 75W is very expensive and Ravenol has a good product to use in it's place. Folks use it in 5th gen and up T4R's. I understand that there are good, cheaper alternatives for the 4th gen.

4RunnerAquasport · 02-13-2023, 01:17 PM

From what I remember the Ravenol 75W is the European spec for the Toyota transfer case. I have it in both of mine.
I've read the ECGS Oil recommendation, so I run both diffs on Lucas conventional.
I am going to look for a conventional TC oil in a few months.

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