[crazeefishin]

was just wondering if anybody has ever used freeze12 instead of r12 they say the pressures are alot lower with freeze12 in our trucks. My friend at the ac shop said on my ford if I just convert it to r134 I will lose about 8 degrees in temp. and maybe more at a idle. What a about the different types of r134 some say they will cool better than others with their additive they use. or is that only true if you are putting it in a system that already uses r134. last question what about a variable orfice tube.

we just had a little girl and I need all the cooling I can get in the crewcab!!!

thanks yall

 

[Discbrks]

I had a friend put freeze-12 in his Chevy crew cab and it worked excellent.

 

[Mr_Roboto]

I recommend sticking with "approved" coolants, either R12 or R134a.

Once you put Freeze 12 in your system, no legitimate A/C shop will touch it. Also most "R12 replacements" contain flammable gases, which is a no-no.

If you can't live with the loss of (maximum) cooling capacity by using R134a, then bite the bullet and pay for R12.

 

[Phillipmc1268]

I just had my system recharged with R134A and it is as cold or colder than R12, except at idle. Yesterday it was about 90º and humid. Once I had the cab cooled down, I was very comfortable driving with the fan in the second from the bottom position and the temp control slid over halfway. At idle it is adequate, but not frosty. My shop thinks my fan clutch is not working properly, I haven't had the time to figure it out. All I can say is most of the time my temp gauge is just inside the bracket, then for some strange reason it likes to creep to 3/4's of the gauge, then go back to 1/2.

At any rate, my A/C shop has been there in the same family since the late 50's installing underdash units for all the dealerships until factory air came along. They know automotive A/C. He said it would be a good idea to install an electric pusher fan switched by a high side pressure switch. This would cool the condensor better lowering the pressure, which is higher with R134A, and not stressing the old R12 compressor and perhaps make the system more efficient at idle. I was going to do it, but his switch didn't match my threads and I was in a hurry so I didn't bother. My 1999 F150's A/C isn't all that great at idle either.

My truck doesn't have an orifice tube, but I did read on here once that variable orifice tubes have a nasty habit of coming to pieces.

Congrats on the lil' girl, Dad! You'll have more complaints from the sweaty wife that the sweaty kid!

Good Luck!

Phillip