Hello guys, the topic has been discussed many times, yet I am unsure. My V70 2.5 TDI (103KW/140PS) is from 1999, and now has 428,000KM down. I bought it in February 2013 with 403,000KM, without a service booklet or workshop history. (Was an export dealer….) The automatic transmission switches with a very light jerk, under load or with trailer of course a little harder. The transmission oil is not black and mushy, but deer brown and almost transparent. At least far from red, as it should be…. Is it worth changing the gear oil? If so, which Dexron III should be taken, or does the manufacturer not care? To me: I screw his own 20 years, therefore I have no concerns in terms of work. Workshop with lifting platform is available. I would flush the gear with 10-15 liters. So top pipe on the oil cooler, and run in the stand. Pump out or replenish in 3 liter steps until it is clear r pumping out What do you think? Greetings Stephan