Forum members recommend the following for this XC90 5-cyl Transmission project:
You will need the following
- 12 quarts of the correct transmission oil
(some may want 14 qts.) - 3-4 gallon jugs pre-marked in 1 or 2 quart
increments - A long neck flexible funnel, got mine at
autozone for about $2.50 - A length of clear plastic tubing with a 3/4
inch outside diameter, got mine at Home
Depot in a 10 ft length, pre-packaged for
under $8.
Procedure
- Locate the transmission dipstick, this is a pain until you find it the first time. See the first picture, the top arrow is the hose you need to pull to the right and out of its bracket to see the dipstick. The bottom arrow is the dipstick.
- Remove dipstick. There is a little clip on the front site of the tube. Pull it towards the front and the dipstick will pop out easily. The second photo is a close up of the dipstick (YES IT DOES EXIST)
- Place the long neck funnel on thedipstick
- Remove the top transmission line connector. To do this locate the green plastic connector clamp, grab the hose and turn side to side (as if it were a ratchet handle).
- place one end of the 3/4” OD hose into the now exposed transmission return line. Mine fit very well as is, but some have suggested using some silicone tape to make a secure seal.
- Put the other end of the hose into premarked gallon jug. I put mine inside the bucket incase it spilled (which it did) and to make sure the jug wouldn’t tip over.
- Start the car and with the help of a friend pump out 2 quarts of oil at a time. I noticed that the XC90 pumped out slower than my 850 when I did that one.
- After you have pumped out 2 quarts, turn the car off and refill 2 quarts. It doesn’t matter so much that you pump out EXACTLY 2 quarts, you can be +/- on that, just so long as you end up with 12 out and 12 in. Be sure to factor in the oil that will be in the tube, not too much but be aware of it.
A few notes
Some people prefer to drain the transmission oil first and start with that. If you do the arrow to the
left is the one you want to remove to drain the transmission oil pan
Mine took about 8 quarts to start coming out cleaner and was fully clean between 10-11 quarts.
have heard of some people needing 14 to achieve clean oil. Make sure you are prepared with both
the correct amount of oil AND the jugs to contain it.
MadeInJapan wrote:
jetskifast wrote:
“T6 has GM transmission, no drain plug.
Just preformed transmission flush and filter change on my 2004 T6.
Very simple job.
- Use vacuum pump to suck fluid out dip stick. You will get about six quarts.
- Remove pan, replace filter.
- Fill transmission with 6 quarts of fluid.
- Remove transmission fluid cooler return line, will be the straight line heading back to transmission from radiator.
- Attach tubing to return line, run line into clear 1 gallon jug such as milk bottle.
- Start car run until bottle fills half way about two quarts.
- Stop car, put 2 quarts of new transmission fluid in car.
- Keep doing this until your transmission fluid comes out clean.
- For my complete flush and refill I used 15 quarts of Redline D4 ATF.
You can find pictures on line, just googgle Volvo XC90 T6 transmission flush.”
XC90 Transmission Fluid Flush Tutorial with Photos
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Last Updated on March 16, 2022

