Quote:
Originally Posted by Jubsz
I recently purchased an 08 V8 model with 160k miles and have it in for inspection + baselining of fluids/maintenance.
I have records of it having a 90k service at a Toyota dealership, including front diff fluid, transfercase, and rear diff fluids. I called and asked if the Trans was included but they did not have records of that. I understand it's somewhat considered a "lifetime" fluid. I'm not sure I subscribe to that idea.
I talked to my shop and asked about changing it. Their recommendation is for vehicles over 150k miles, if it hasn't been done, leave it. I'd really like to have it swapped out for peace of mind. I know this can end up being a religious like debate but I find it hard to believe that leaving it is the better of the two options. They said they'd do it if I want them to.
They serviced my 3rd gen and it has been great. It's at 236k miles and the transmission is totally solid. I believe they use some type of a fluid exchange machine that connects to the cooler lines and puts in only as much as came out, but without additional pressure applied.
Any thoughts or reasons not to change it? I also may tow in the future.
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I say this kindly - this has been debated forever on this forum and there are many opinions you will find through searching.
If you want mine, your gut feeling is correct, there's no such thing as "lifetime" fluid unless you use the manufacturer's definition of "lifetime," which is while the powertrain warranty is in effect, not the 200K+ real-world lifespans these trucks have. I did a full fluid exchange at a dealer at 115K then another on my own using the cooler line method at 220K. No issues, but of course YMMV. See the pinned thread at the top of the 4th Gen section with links to maintenance writeups to find a how-to on the cooler line method. If a shop does it, an exchange is the way to go, not a pressurized flush.
And for the love of God, just please don't ignite the WS vs. Maxlife debate again. LOL