I have read that in some countries, the manufacturer must calculate the environmental impact of the fluids that a car needs over its life.

Hence, some of the new maintenance requirements only change fluids "when needed" or when a repair is performed.

Some drop the fluid with each oil change until the fluid looks new.

People who have changed all the fluid in an old transmission have had problems pop up.

On the FWD section, this is called a slow transmission fluid change,

I own a Honda Odyssey. They are wonderful vehicles but like most minivans, their slushboxes tend to fail often. The Honda box especially is very picky about the type and cleanliness of the fluid. Standard operating procedure is to do a drain and fill (~3.5qts) at each oil change (~7500miles) to hedge ones bets on keeping the tranny alive. Thankfully it's an easy job.

Your situation might be unique, but generally, this is what you're dealing with when disconnecting a cooler line at the radiator.



At least you can disregard that advice about using the large retaining nut as a counter hold now that you've seen how it works.



--
Art Benstein near Baltimore

Do plumbers who become electricians install outlets upside-down? Hot on the left?

A lot of the FWD owners do it that way. Each time you drain it you get roughly half of the dirty fluid out. A fair amount is retained in the torque converter. So after three drain-and-fills you will have removed about 87% of the dirty fluid. That’s better than doing nothing.
--
Current rides: 2005 Volvo S80 2.5T, 2003 Volvo V70 2.4NA, 1973 Volvo 1800ES (getting ever closer to road worthiness)