ac unit needs recharge

Asked by Apr 13, 2017 at 12:48 AM about the 1975 Chevrolet El Camino Base

Question type: Maintenance & Repair

Where or how do I check the ac system (believe it's a R11 or R4 system) can't
legally get recharging fluid, do I need to convert to new refrigerant system?

4 Answers

28,715

HI..THEY SELL REPLACEMENT FREON..CONNECT IT TO THE LOW SIDE HOSE.UNDER THE HOOD TO THE..FITTING GOING INTO THE PASSENGER COMPARTMENT..WITH THE ENGINE AT A FAST IDLE AC ON CAN UPSIDE DOWN FILL UNTILL THE BUBBLES DISAPEAR IN THE SIGHT GLASS...HERES A IDEA.. www.youtube.com/watch?v=sLKBpO3UQh0

1 of 1 people found this helpful.
74,165

There's a direct, drop in replacement, for the old R12 that was originally in there. It's R12a. Perfectly legal and is available in 12 ounce cans. Google "R12a" and the company who sells it will pop up. I forget the name of the company right now but you'll be able to find them with the Google search. HTH. -Jim

28,715

HI TrannyMan...WHEN DO WE FIND OUT IF IF HE FOUND EITHER OF BOTH??? k

1 of 1 people found this helpful.
74,165

The name of the R12a that I've used is "Red-Tek". Just googled it. I believe you're right, Trannyman, no need for STP here, LOL! HTH. -Jim

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