A DIY owner should be an experienced wrencher for that. Depending on the transmission model (with/without cooler), I probably would prefer to do a complete fluid replacement at 140K miles. They repeat the drain and fill until they've changed the total volume. Most owners prefer to drain the pan and refill, and not bother with the strainer. Removing the transmission pan can be a problem because Toyota's pan bolts tend to snap off in the hole. $18 Zerex Asian Vehicle Red Silicate and Borate Free 50/50 Prediluted Ready-to-Use Antifreeze/Coolant 1 GA It has HOAT (hybrid organic acid technology) chemistry just like the Toyota coolant. The Toyota coolant is pricey, but you can also use Zerex asian car antifreeze from Walmart or Amazon. I tried that in my wife's Avalon, and it attacked the elastomer seals in the cooling system. IMO, the only real NO-NO antifreeze in a Toyota is Dexcool (orange color, OAT chemistry). If you switch back to the Toyota coolant, I would do a really good flush with heater on, etc. The old green antifreeze has silicates in it that can cause scale deposits, so it requires regular maintenance. This was back when the old green was the accepted technology, and the red Toyota coolant was new on the scene. Worth noting that my 4Runner had an old school soldered copper and brass radiator. The reason for using the Toyota antifreeze is because it has superior chemistry (HOAT) which reduces scale deposits and extends the change interval.īefore I knew better, I used the green antifreeze in my old 4Runner for decades (regular flushes and changes) with no ill effects. Whenever I do get around being able to replace the radiator, I will be flushing when I do, and if I feel crazy enough.may even just go ahead and try to tackle replacing the water pump and timing belt if the general opinion leans towards green being a big no no from you all that know a lot more than I do when it comes to these trucks. Have actually been running it for close to 2 years. I also don't plan have immediate plans to do this, so wanted some opinions of others.Īlso, she does have a leaking radiator (if you don't check it, takes about 3-4 months to get low enough to have overheating on the gauge) and I have probably done the no no of just running universal green in it instead of the Toyota fluid (when you don't find yourself at an autoparts store.). I have gone through and looked up the procedure to make sure the fluid level is checked appropriately with fluid temp and the overflow tube. Only thing the truck does that has done it since she bought it, is at a stop it takes a little bit for the transmission to release pressure on the drive line. Just curious if I should see about replacing the filter, or just drain the pan and top off with fresh. She bought it used about 6-7 years ago from the dealer who had fully serviced it (as far as she was told). I am dealing with my fiancee's 05 Tundra and it is at 140k.
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