My A/C on my 1990 F-250 isn't blowing real cool. A bud gave me a can of R-12 and a hose to install it but the hose has a threaded fitting to hook to the low-pressure side. My truck has snap type fittings like an air hose. I don't know if there is a hose made for R-12 cans to this type of fitting. Anyone? Thanks.

 

If your truck has QD style connections it has likely been converted to r134 and you must not mix other refrigerants.

If you don't understand the differences or why it's an issue, I strongly suggest you have the system serviced by a professional. Most DIYers manage to screw up their A/C systems. In theong term with add-a-can setups pouring tons of extra oils, leak detectors, seal "conditioners" and other garbage. That's on top of not finding underlying issues or wear items as needed.

Really, unless you're a proficient shade-tree, with proper gauges and temp probes, don't start on A/C repairs. It's NOT as easy as auto-zone would have you believe.

 

Agree. Spent over $1000 on all the proper equipment to do it right.