My 6cyl was smoking after idling and I used a can of Restore, after driving it about 300 miles it appears it quit smoking.Its designed to be added to the oil and drive with it and there is a money back guarantee if it doesnt work. I probably would have done the tranny fluid treatment, however I had not read this post before I did the oil change.Good luck. METALMOVER

1987 Raider,2.6,mt,78"Meyer snow plow,100lb. Doberman alarm,weber carb, lockouts from here- 1989 V-6,SWB, A.T. 4x4, 31'S