Hi there,
I just flushed the transmission on my 2001 v70 T5 this past weekend. The procedure is relatively simple, so I'll encourage you to take this on if you're comfortable under the hood.
It's a little different process on the 2001-on v70's so here's what I did: Remove the top hydraulic hose, on driver's side, from the radiator. The plastic green retainer should be pinched to release, and then pull with quite a bit of force to remove the line. Place a 5 ft. length of clear plastic hose of 1" inner diameter over the nipple on the radiator and tighten with a screw clamp.
Place the other end of the hose into a milk jug that has volumetric markings on the side for 2 quarts and 4 quarts. It is important to punch a hole at the neck of the jug to allow air to escape - otherwise the jug will split from air displacement or it will fly off the hose and make a nasty mess.
Start the engine and the torque converter will begin to pump out the old fluid. It comes out rather fast so keep an eye on the jug. Pump out only 2 quarts at a time and turn off engine BEFORE the level reaches 2 quarts! Several ounces will continue to drain.
You will need a funnel with a long piece of flexible hose to reach the dipstick tube. I fashioned my own with spare bits of fuel line laying around. Make sure hose is fitted securely in the dipstick tube and patiently pour in 2 quarts of 3309 fluid. This takes time.
Continue the process until you've gone through the case of fluid. Then drive the car for 15 minutes to heat up the fluid and check the level. Since there is no drain plug, it is better to underfill than overfill.
The Mobil 3309 fluid was not easy for me to find locally. I ordered it from AV Lubricants in Columbus, OH. HOWEVER, as best I can tell, the Toyota T-IV fluid is the same thing - same bottle, black instead of Mobil blue. So a trip to the local Toyota dealership may be the best way to find it.
Best wishes,
John
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