I tell you that this product works! My BENZ transmission was slipping from overdrive to 3rd gear and it was not such a great feeling in a Luxury vehicle. That feeling lasted for one day, so I inquired about LUCAS Transmission fix. THIS PRODUCT WORKS! I followed the instructions as stated on the bottle and squeezed exactly 4 times of this product in to the automatic transmission dipstick funnel, checked the fluid level, secured it, closed the hood and went for a drive. No slipping what so ever. And the beauty of it that is it cost me $8.00. I can't even tell when the car is changing gears! WOW~ THANKS TO THE CREATORS OF THIS PRODUCT!