I need to change the transmission oil on my 2000 WJ 4.0L but cannot find a supplier of the ATF+4 fluid. I have trawled through the forum and although there is a lot of discussion about it I cannot find any possible suppliers other than Jeep. Having looked at several other sites I have come to the conclusion that genuine ATF+4 is the only fluid that should be used. Is this a correct assumption? Also exactly how much is needed, the lubrication guide seems to have got a bit confusing on the WG/WJ section without any quantities. Thanks guys.