Thanks. After I clean the pan, replace the filter and refill the tranny I'd like to bucket flush to converter. Should I remove the supply line or the return line, I've read both ways. I'm thinking the return line would be best so as to also flush the tranny cooler. Any recomendations on fluid? I know Royal Purple makes a synthetic thats suppose to be good, but expensive, or would you just use dextron? The fluid doesn't look too bad on the dipstick, but if there's alot of sediment in the pan would you recommend using a transmission flush before I start the change? This is a 200 4R and I was getting some slippage between 1st and 2nd on WOT acceleration. I'm also going to try adjusting the TV cable, but I want to touch all the bases. Lucas Oil makes a transmission conditioner, would you use that or not? All the Lucas products I've tried have been excellent.