6-speed aisin f21-250 gen 3 automatic transmission


How To Change Aisin 6 Speed Automatic Transmission Fluid

Old 09-19-2012, 11:27 AM

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Old 01-12-2013, 02:13 PM

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transmission fluid replacement.


Thank You for the detailed procedure to change my mini cooper s convertible transmission fluid. The pictures really help. My husband is going to do it tomorrow and I'll let you know how it goes. What's so weird is since the weather has been unseasonally hot here my transmission has been shifting smoothly.
Or maybe my Mini heard what coming. Ha! Ha!
Thank You,
Audrey

Old 01-12-2013, 02:55 PM

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Quote:

Originally Posted by clutchless View Post

clutchless

nice writeup, i have a couple of hopefully helpful comments

1) if you drain the fluid cold after sitting all night (do not start the car before draining ... you must park the car where you will be working) you can get 4.5 to 5.5 quarts to drain out! i got this tip from a friend that owns a transmission shop

2) there is a fill tool available from http://asttool.com and other sources for filling the transmission from underneath via the drain plug, it fills much faster with less mess, there is no need to even remove the filler plug

3) my friend with the transmission shop recommends 30,000 mile changes even if using synthetic fluid

4) my friend also ALWAYS drops the pan to clean the strainer and the pan itself

scott


Last edited by bmwr606; 01-12-2013 at 02:56 PM. Reason: added point 4

Old 01-13-2013, 04:40 AM

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bmwr606: I agree, mostly

1. That is how I changed mine (I sold the MINI in May) but never managed to get more than a couple quarts out at one time, even when jacking the car so it leaned to one side and after removing the overflow thing.

2. I have the VW fill tool. It helps some. It has been discussed either earlier in this thread or the 2nd gen thread. You have to carefully measure what goes in and out and need a hand fluid pump. If the amount you pump in is over the top of the overflow thing, fluid will spill back out while you scramble to install the plug. Be carefull. If someone wants to buy it, I will sell it for $14 shipped. PM me.

3. I agree, I was doing 2 drain and fills every 20,000 miles. 30,000 would be fine.

4. I disagree on this. The internal filter is little more than a window screen, unless you have 100,000 miles and it is your first change, I would leave it alone. I have done this on other cars and never seen much debris. If you have 100,000 I would do a couple drain and fill changes then change the screen/strainer on the third time. I would not try to clean it, that is false economy as they are inexpensive compared to the cost of a transmission. Just replace it. Be sure you know how to replace a transmission pan gasket without stripping the bolts or causing leaks on the installation. There are some good instructions at Pelican Parts linked on prior posts.

Old 02-05-2013, 12:30 AM

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PM sent for filler adapter

Old 10-14-2015, 11:57 AM

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Quote:

Originally Posted by clutchless View Post

These are the magnets from inside the pan. The one on the right I cleaned, the other is what both looked like when I pulled the pan. That about normal?? No metal slivers ....just gunk

Old 11-28-2015, 07:20 PM

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Old 10-04-2018, 09:28 AM

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Originally Posted by clutchless View Post

There is a much easier way to do this procedure. MUCH easier. See Easiest way

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What is a 6

Aisin: The Aisin 6-speed automatic is one of the transmissions available with Ram's 6.7L Cummins turbo-diesel engine. This engine produces up to 400 hp and 1,000 lb-ft of clean-diesel torque. With the Aisin transmission, it can tow 31,000 pounds.

What cars use Aisin transmission?

Aisin AW supplies automatic transmissions to 55 automotive manufacturers around the world, virtually every major OEM. These include General Motors, Ford, Jeep, Mitsubishi, Nissan, Saab, VW, Volvo, Hyundai, MINI among others.

Where are Aisin transmissions made?

Aisin constructed a factory in the United States in 1986, with production beginning in 1989. This factory in Seymour, Indiana has since been expanded and supplies components for Honda, General Motors, Mitsubishi, Nissan, and Toyota. Another factory was built in Marion, Illinois.

When should I change my Aisin transmission fluid?

With the higher quality living standards and deteriorating traffic condition, AISIN sug- gests car owners to change ATF every 2 years or 20000km. Witout proper maintenance for the ATF, it will reduce your car performance, higher fuel consumption, or causing damage to the transmission.