I installed a aux cooler and added 1 bottle of Lucas after a full fluid change. It made a HUGE difference. Mine didn't bang shift but ran really hot. I bet I cooled it by 50-60f by doing this. Cost less than $100.

95 Contour GL. Bought new. BAT Sway Bars/Pioneer CD/Koni Rear Struts/Mobil Fluids. Looking for 15" alloy rims-PM me. 180,500km's so far.