Mobil 1 Synthetic ATF , Mobil ATF 3309 or JWS3309 ?

[STSCowboy]

My Mobil 3309 showed up from Summit Racing (12qts $53) yesterday and I dumped the sump and boy was it black as coal! This has obviously never been serviced before! So I filled it up and drives the V70 for about 10 miles and dumped it again and refilled it. I’m going to drive it like this and repeat the process every tank of fuel. This fluid was so dark I want to give the transmission a chance to acclimate to the new 3309 being introduced.

I’ll probably order another case of 3309 because as dark as this was, it’ll take a lot of dumping to get clean looking oil.

[STSCowboy]

That the sun through the mason jar!