The TurboHydro 400 in my van went out and after reading the good reviews on Google, I decided to take it to National and I am glad I did. Daryl and Glenda took good care of me and went through the transmission and even some other systems, all in the interest of helping me to get a better vehicle. Because of the good experience, I also had them service the differential on an older vehicle of mine last week. I was initially quoted a price based on the work I wanted done of about $200, but after I had it towed in they came back with a price that was 4.5 times higher than the original - in around $900. I reluctantly agreed to pay it because I wanted it done and had paid cash to tow the car in (and home too obviously so I had cost involved), but have had several automotive people tell me that I was taken for a good ride on the cost of this one with 6 plus hours of labor to change a pinion seal and a couple of axel seals. Bottom line get anything in writing and get a second opinion. I probably would not have brought the car in had I known the price would be that high and shopped around for other options. No complaints about the quality of the work though, at least at this point.