Rated 5 out of 5 by 3
Rated 5 out of 5 by Nathan700 Actually works
I put this in 2 of my cars that were both exhibiting definite hard shifts intermittently and they weren't getting any better on their own. Added a bottle of this stuff to each and after 150 miles each they drive like new. Wasn't instantaneous but gradually noticed the changes for the better. Only downside is if your transmission fluid is already at the high side of maximum, there is no room to safely add even this brand's relatively smaller 8 ounces without taking some fluid out and of course some cars like mine don't make a drain plug so taking some out can be as labor intensive as a complete fluid flush but saves you from having to get costly transmission repairs at least for a long while!
August 1, 2016
Rated 5 out of 5 by slickback smooth trans with prolong
Use this treatment in our Harley Transmissions
smooths them right out...!!!
March 16, 2015
Rated 5 out of 5 by Mercedes Excellent product, I use it in all my cars!
A very good friend recommended prolong
Trans treatment who has a transmission rebuild shop.
He rebuilds all types of Trans with a specialty
In European transmissions.
All his transmissions come with warranties
Primarily because he tops all his rebuilds with prolong transmission treatment.
He also recommended it on my sons Jeep Grand Cherokee which was shifting roughly and it cured all the issues in under 200 miles!
145,000 miles and still shifting like a champ!
November 15, 2014