New TN User
Join Date: Jan 2012
Location: west virginia
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opinions on need to change differential and other fluids
I have an '02 Tundra with 18,500 miles (no, that's not a typo) and I'm wondering about the necessity of changing the front and rear differential fluids, transfer case fluid, and tranny fluid, and also the coolant. In the future, I'll be using this to pull a boat trailer (around 2500 lbs total) about 1000-1500 miles per year. The owner's manual suggests fairly regular changes if you're trailering (which they don't get very specific about), but this is by no means a lot of trailering. It's not like I'm hauling a construction trailer every day due to a job, etc. However, I've also read that these fluids can deteriorate over time, so mileage is not necessarily the only indicator.
I went to two dealerships. One service manager said he wouldn't worry about changing the diff's and tranny, but would definitely suggest changing the coolant since it breaks down over time.
I talked to the main mechanic at the other dealership, and he said he'd strongly suggest changing the diff's and transfer case, but not the tranny. He also said don't worry about the coolant; it doesn't break down or lose properties.
See why I might be a little confused? :-)
I'd appreciate any knowledgeable or experienced advice on this dilemma.
Thanks in advance.