Attention: TDR Forum Junkies 
Please help if you can... My Auto on my 99' with 112K shudders under small to medium load such as trying to maintain uphill speeds on freeway. It only seems to do it in high gear whether in overdrive or not. Just had transmission flushed last year at Oil Can Henry's and the ATF level is good. The other thing it'sw doing is not down-shifting from high gear going up a hill unless I push the pedal to the floor. Otherwise the thing works like new. Is there an additive I could add? Does Oil Can Henry's use ATF 4+ ? Thanks much!
