Quote:
Originally Posted by Caryalon
I own a transmission shop.I would be hesitant to change fluids at 180k miles of it hasn't been done before, but that's mostly because of i do it for a customer, I am on the hook.
I would drain the fluid / drop the pan and inspect before changing. If the fluid is clean and clear, but dark, change it. If the fluid is burnt, or thick, or you find metal in the pan, changing the fluid is not a good move.
By the way, Dexron is backwards compatible - so Dex VI covers Dex III. The Valvoline and Castrol multi ATF fluids are good choices.
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I am taking this advice on saving the original fluid in a new drain container just in case it is evident there is any issues of severe wear inside the transmission.
At this point, the transmission runs and shifts perfectly and is right at that point of no return on mileage for fluid change for sure but if I don't do it now, I will never know. There is not a lot of HP on the business end of the box and I never lean on it so I am assuming it will be fine.