When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I bought the whole kit on ebay, you need the whole kit since the cans are threaded and adapters come with to fit your low side fittings. It is compatable with R12 got it for 50$ and took about 20 minutes. I didnt evacuate the system since I dont have a vac pump, but doesnt seem to matter.
Quig
you can get an R-134 conversion kit with freon oil conditioner and leak sealer at wal-mart for $33...all you need is an empty R-12 system....it does the rest..screw one adapter on...hook up a hose...shake the can and ur done...no mechanical stuff required....using freeze 12 you shouldnt have to put adapters on the lines since it is an R-12 replacement...there is no change-over for freeze 12....put it in right on top of you old R-12 freon.... you can get freeze 12 at most any major parts store without any kind of special license for about 7 bucks a can...but i would do the conversion because it fixes any leaks you have and conditions all those seals....i mean if the system doesnt leak, why are you recharging it?...go with the one with leak sealer, you most likely need it...oh yeah....if you catch it on sale you can get 134 for about 3 bucks a can and use that after you do the conversion....
The link below has some tech info on freeze 12. Sounds like it's worth a try. A lot of the r12 to 134 conversions that I've done work, but they don't seem to blow as cold as they did with R12. According to this link, Freeze 12 maintains the same level of cooling as R12. http://autorefrigerants.com/co00030.htm
i dont know about maintaining the same cooling rate...but i converted my explorer and it blows frigid cold...lol.... ive used both and freeze 12 is a good product also...
You do need the adapters since the charging hose is different. To convert to 134a you do need to evacuate the system since the oil is not compatable with the r12 oil.
Quig
What about the old oil left in the system? Don't you have to drain that?
No. The mineral oil left behind will not mix with the R-134a refrigerant. That is why we add Ester Oil, because it will mix with R-134a and lubricate the system components. The mineral oil just finds a low place in the system, where it stays, until it is removed at some later date during future maintenance or repair. The mineral oil does no good, but it does no harm. It's just there.