Where, when, and how much ester does one add?

Thanks.

so now you have your good luck charm down to a science, when business is slow - take apart your car.

Sounds like you've come up with a way to drum up business.:D

It's sort of like the rain maker I used to have. It was called a Haybine. Every time I would cut hay with it, as soon as it hit the ground the rain would come. I called it the rainmaker.

Determine the amount from the manual. Most are 6 1/2 or 8 oz. I think. If the system has been completely and thoroughly flushed everywhere, pour a few ounces in the evap, a few in the condensor, a dab in the compressor and a few ounces in the receiver.

If it has NOT been flushed, it's a guessing game. There are little disposable gadgets you can get to push onto a port and get an oil sample. You can get an idea with them if it is over or under charged with oil, but it's still a guessing game.

Hope this helps.

Honestly, I kind of winged it on the oil.

Someone can chime in the total volume, but what Larry says sounds right.

At first, I removed the compressor. From there, you remove the receiver/drier and you have that point separated the system in 2. I disconnect the large nut near the low side port, and pour acetone in it. Chase it out with compressed air.

Be Careful, because acetone eats paint.

Do the same on the condenser side as well. Just deposit the oil throughout the system, as in do not pour it all in one spot.

Then pump down, see if it holds, then start pumping nitrogen to check for leaks. I tested at 200psi. It will vary a little bit depending on ambient temp differences, so as long as it is +/- 3 psi it fine.

Yes, that does help
 

Compressor dead in my 300TE. PO converted it to r134, so I'm following the threads here to convert back. Two years ago I replaced all the pods, and evap isn't leaking per UV dye.

So new compressor, R/D & 2 switches, expansion valve, flush everything else, and add ester as directed.

Thanks.