Most Liked Positive Review
Worked exactly as advertised
GM 4L60E with 157K miles on it. Had a horrible shudder going from 4th gear overdrive into third and or accelerating in traffic at highway speeds at operating temperature. Lots of vibration in the Driveline when cruising in overdrive. At times the shudder would get so bad that the cruise control would disengage due to computer thinking there was a malfunction. We poured two containers of this product into the dipstick tube within 5 minutes the Driveline sound and vibration was reduced by half and the shudder from 4th to 3rd has gone away completely. Accelerating in traffic from a stop or merging onto the Interstate the car has a lot more power too, smoother shifts no longer hunting for the gears. The stuff is amazing the shudder has gone away completely, feels like we installed a new transmission.