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I got a Bosch Premium Performance 96r battery for my 2012 Ford Fusion at Pep Boys about one and a half years ago. Yesterday, I went back to get a free replacement, for it could not even hold charge overnight. Besides $15 for installation, they also charged more than $30 for price difference. I...

I have got some email tunes for my 2012 Ford Fusion v6 3.0(43k miles). While communicating with the tuner(James), he was not able to tell me how long would be optimal for the RPM to drop. At about 20% throttle, it takes about 0.35 s for stock tune, but James tunes give different results for...

I found oil around the bolts in the holes indicated in the picture below. It happened when there were 20% to 30% oil life left. I checked oil level is within normal range, and there were no other problems found. What might have caused the problem? Is it possible that it's running lean with a...

Since the 6F35 in my 2012 Ford Fusion V6 3.0 FWD seems to be failing, I am considering doing a transmission swap. 5-speed A65M-R (V6) manual is used in the 1st gen Mazda6 with the same CD3 platform and V6 3.0 engine. 6-speed Mazda G6M manual is used 2012 Ford Fusion I4 FWD. Since 6F35 is also...

If I get a turbo kit for my car, which one of these is best to get. They all can monitor PIDs, but Edge Evolution and SCT Liverwire also have tuning capabilities, with SCT Liverwire more versatile. I wonder if hand tuners can handle aftermarket turbo kit. Does any of them has best monitoring...

Reset KAM with tuner vs pull fuse vs disconnect battery My 2012 Fusion (V6 3.0 FWD with 42k) has harsh shift problem. Although I plan to take it to the dealer to get it checked out. I wonder if resetting adaptive transmission like many Mustang owners do helps. If it is worth doing, what is the...

My car is 2012 Ford Fusion V6 3.0 FWD. It's mostly used for short distance city driving (5 to 10 minites). It has some harsh shift. I am considering what 5w20 synthetic oil to use for the upcoming oil change. Some people say just stick with any name brand. However, I have read negative reviews...

Both too soft and too hard shift is bad for the transmission, but how can I know if it's at optimal firmness? James told me it's different for different cars, and only experience can tell. I think at least for a specific transmission there should be a preferred length of time for the RPM to...

These two ATFs are both approved for Dexron VI applications, but 06519 is also approved for Mercon LV applications, and it's full synthetic, while 06822 is synthetic blend. Castrol Transmax 06822 Dexron VI has great reviews on Amazon, but I had a hard time finding any information on Castrol...

Loaded 91 octane tune (Steeda CAI with insert) from James. Acceleration is much faster than stock and steeda tunes. However, I am not sure if the shift is still harsh. When shift was harsh using steeda and stock tunes, I felt like being pulled from behind then return to normal speed when...

Shift quality of my 2012 Fusion V6 3.0 is not good, so I used an SCT X3 to get two log files for my car. I have no clue how to look at them. I wonder if someone can have a look at them to see if there are problems? Thanks. Here are the links...

Changed out the Mercon LV ATF in my 2012 Ford Fusion SEL V6 a few days ago. Originally, I planned to get Mercon LV from Advance Auto parts, but they did not have any in stock, so I got Peak Full Synthetic Multi-vehicle (ATF) Automatic Transmission Fluid recommemded by them. It's said on the...