So I've done some homework (reading around these forums and the internet) on transmission fluid and the "Transmission shudder around 40 MPH" problem. I'd like some opinions on my situation. Here's what I know:
- It's the gf's car; she bought it used with 16,000 miles on it.
- 2009 Escape with Mercon LV installed by the factory, 6F35 auto transmission
- There is a shudder in the gas pedal at 42 MPH
- Trans Fluid Service history is:
6/29/10 (25,000 miles) - tech noted "dark" transmission fluid
2/7/12 (40,500 miles) - transmission fluid flushed, Ford used their Mercon LV, part#XT-10-QLVC
7/3/12 (46,500 miles) - tech noted "dark" transmission fluid
7/23/12 (47,400 miles) - different tech had no comment about the fluid after performing the "multi point inspection"
Here are my questions:
1. Should I be surprised that a tech thought the fluid was "dark" 5 months, and 6000 miles after it was replaced?
2. Do these shudder stop products work for "shudders" of this kind? Dr. Tranny has a "Fixx" product, and they say on their website, "For use in ANY automatic transmission fluid. Not for use in Ford Type F or CVT applications".....what does that mean?
3. All the discussion about what kind of fluid to use is moot in my case because it came from the factory with Mercon LV, right? The best product to use going forward for me is the same stuff they filled it with last Feb?
4. I've read several accounts where people have had the shudder disappear after a fluid change. Is it possible a shudder at 42 MPH is permanent because of physical damage (possibly the result of waiting too long to change the fluid)?