My 97 E300D with 230K on it seems to have the tranny slipping a bit. I have owned in for 50K and Im pretty sure the transmission has never been serviced. What would the members of this site recommend I do to keep this transmission going? I dont have the cash to invest in a new transmission. Would changing the (LIFETIME) fluid help or maybe one of the more expensive liquid tranny fixes that are sold? Would having the transmission computer flashed do anything? Its definitely not bad right now and maybe Im imagining it slipping but I want to do something to keep this baby running. Thanks