It does have the rear AC.

 

Noob graciously sent me two of these to test in my personal 'fleet', first one went into the Excursion since it most closely resembles the F-series most people here have.

The results are in, and I am F-ing shocked. The humidity on the pre-treatment test days was quite a bit higher than the after treatment test today. I don't know how much humidity changes the A/C's ability to cool the air so I'm throwing that in. The instructions are to put the stuff in and let the vehicle run for 30 minutes, I didn't. It probably ran for 5-7 minutes when I first checked the temp and it was already showing lower temp than before, I then shut it off. I needed an excuse to drive so I decided to go to the reloading supply shop 18.6 miles away. BTW Noob, you owe me $15 for the .30 Carbine dies I didn't need yet But since I can't buy ammo in Ca. any more I might as well be prepared, I have a love/hate for that place, anyway....

The vehicle and test conditions: '02 Ex with 432K miles. I bought it just under 1 1/2 years ago with 425k and there were no signs of any AC work having been done. It works pretty well 'till the temps get over 105ish, then it starts to struggle. At 115-117 (hottest I've driven it in) it's got just enough power to keep the interior from being crappy. It's a big black box so lots of heat load to deal with. For testing I ran only the front AC with an old analog BluePoint A/C thermometer in the left of the two center vents. I have the digital/electronic climate control system, I set it on "auto" and the lowest temp which is 60 degrees, fan speed manually dropped two clicks to make sure it wouldn't go up & down while driving. Front windows down, back windows cracked, and quarter panel windows open to give the AC a good load. I expected little to no change so I figured that making the conditions as bad as possible would help reveal any temp. changes, and in 92 degree temps I knew it would get quite cool inside. Ambient temps taken from the climate control display, it seems to read about 3 higher than actual temp, maybe the heat coming off the road, or it's just 3 off.

Vent temp before treatment in 90-92 degrees: 59 at idle, 52-53 at 1200RPM idle, 50 highway cruising. Street cruising it floats between 50-59 as one would expect.
Vent temp after treatment in 99 degrees: 50 at idle, 41 cruising. Didn't get a good solid high idle number, but it looked like it would probably settle around 44.

I didn't get to do as much after treatment testing as I did pre-treatment, but enough to see that there's a huge difference. Cruising windows down it felt about as comfortable on the 92* days as today's 99*, but there's less humidity so it's not just the lower A/C temp doing it.

40 degree drop stock to 60 degree drop with just the additive seems too good to be true, but I'm pretty sure my numbers are correct. I'm guessing that the more humid air is harder to cool than the dry air. Water has a pretty good heat holding ability so it would seem logical that air with more water would be more resistant to temperature changes. If the humidity comes back I'll try to do more testing.

 

Excellent report sir. It sounds like you are as surprised by the results as I am. I am trying to stay objective and let data drive my conclusions but the results are hard to deny.

As for the .30 carbine dies, see pic:

 

FordTruckNoob generously sent me a dose of this stuff for my AC system as well. Although, we have had some real life issues get in the way, so I have not had the chance to take measurements of the AC system and/or install the Cool Shot Ultra in the truck. I certainly will be taking measurements before and after in order to list them here. Hopefully soon!

 

Subscribing

 

My 800 mile weekend road trip was in 85ish degree weather. With the fan on low to keep a comfy cool temp the vent temp hovered between 37 and 40, pretty chilly.

 

After a long trip this summer from MD to Yellowstone through PA, OH, IN, IL, IA, SD, WY ID, MN, WI, MI and NY our ac was not as cool as we would like especially in the 100 degree IA stretch. What’s the link for this I’m willing to try anything before we head to the Grand Canyon next year.

 

BleedMichigan, PM your address to me. I'll send you a CoolShot. Make sure the AC system is up to snuff (ie correct amount of refrigerant, compressor isn't tired, condenser isn't plugged with road debris, etc etc) before injecting the CoolShot into the system though. It won't help a system with issues.

 

Nope system is fine I ran through it with a fine tooth comb in Iowa thinking something was wrong. Even went to a dealer to check the refrigerant. I’ll pm you.

 

BleedMichigan, your PM inbox is full.

 

Just cleaned it out.

 

Well, I finally ran my test. The car... 2010 Chevy HHR. 201,000 miles.

before reading.

70 deg day, approximately 25 minutes of driving. Lowest temperature reached, 49 degrees. It mostly held at 50 but dipped to 49 once.

after reading.

65 deg day and about 20 minutes of driving right after injecting the Cool-Shot. 43 degrees. Held there for the last 10 minutes of the drive. I’d say this stuff works.

 

Looks like fellas are getting a good 5* degree drop and sometimes more after applying the solution to the A/C system. I look forward to the opportunity to install my dose from @FordTruckNoob , just don't know when that will be.

 

@bertscw , thank you for the report sir! I'm glad to hear it worked well for you.

@Sous , that just means you have more opportunities to take "before" readings.

 

Thank you for supplying the cool shot and for bringing this product to our attention. I would have never looked for a product like this and certainly would not have believed it could work.

I've let a few people know about Cool Shot and most were excited there was actually something out there for older systems to bring back at least some of their performance.

This will make next summer much nicer on the long commute.

Thanks again FTN!