On the original mountaineer with the original design fix the vehicle started to act up again at 47,000 miles of city driving. The original design has been updated with a larger front O-Ring and the grooves were optimized to eliminate damage during installation. The upper heat shield was removed and with a 90 degree needle nose and about an hours worth of time the updated design was installed and the vehicle is back to perfect shifts again. I expect to get 50,000 on this new part for a City Driver. If it fails again at 50k or so we will just pop it out and put a new set of o-rings on it. Currently there is 70,000 miles on test vehicle since the fix was 1st installed.
My name is Andy and we have been selling this fix since February 2010. Lots of success with it I may add. It is working for almost 100% of the people who tried it. Feel free to comment on the blog and I will try to update it when I think there is something good to share.Please take our survey if you have used our product as the detail in it will help us serve our customers better.