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AC Compressor Lube for a 1g

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Thomas91169

15+ Year Contributor
4,490
28
Jan 18, 2004
modesto, California
I removed my intake manifold (Stripped tb stud) and figured while i was there and it was easily accessible, why not get around to lubing up the AC Compressor, which i neglected to do when i installed it. I was gonna pay to get it recharged but a buddy warned me if they have to add the lube its major spendy.

I have a can of PAG100 and im wondering where to put it and how much. We used 3oz on my buddies 94 Mustang GT when we did his AC Compressor swap, so just curious if its the same for us.
 
Its originally a R12 ('90) but since a shop will be doing the recharge itll become R134a anyways.
 
I removed my intake manifold (Stripped tb stud) and figured while i was there and it was easily accessible, why not get around to lubing up the AC Compressor, which i neglected to do when i installed it. I was gonna pay to get it recharged but a buddy warned me if they have to add the lube its major spendy.

I have a can of PAG100 and im wondering where to put it and how much.

As much as you can and it goes right in the inlet & outlet of the compressor hence compressor oil. Major spendy?

I've never had it done so I have no idea on cost but.... they would have to unfasten the charged lines off the compressor, but prior to that they must remove the refrigerant from the lines then put it back in when done adding the minuscule amount of oil for the compressor.
 
Its originally a R12 ('90) but since a shop will be doing the recharge itll become R134a anyways.

If you could stay with R-12, I know the intial bill is high at forty dollars a can but R-12's properties are far better than R134a's. R-12 does not come with oil mixed with it, nor does some R134a cans. Call a part store and have them look up the capacity and the viscosity that you need, you would probably need to look it up for a 2g.
 
Good luck finding R12....it's no longer being produced or brought into this country. The only R12 you'll find will be old stock- then you're at the mercy of the seller as to what price you'll actually pay.

It is a fact that 134A will not work as well in a R12 system because the system is not designed to allow enough expansion for 134A freon to perform at its best.

However, if you MUST convert to 134A, the proper oil to use would be Ester ISO 100 as it's the only 134A oil that is compatible with the residual chlorine left behind by R12. PAG oils are not recommended for R12/134A conversions.
 
Good luck finding R12....it's no longer being produced or brought into this country. The only R12 you'll find will be old stock- then you're at the mercy of the seller as to what price you'll actually pay.

Guess I must be lucky. My neighbor does a/c and refrigerant. :p He hooked me up with some R12 for both my Talons
 
Are you sure it's actual R12? There are plently of places manufacturing drop-in R12 replacements these days.

What's the price per can?


From an EPA website:

"The law was passed to discourage people from recharging leaky A/C systems. R12 refrigerant, which is used in all vehicles built prior to 1993, is an ozone-depleting chemical; so its sale and use is strictly regulated by the EPA. What's more, production of R12 ends December 31, 1995. After that date, the only R12 that will be available will be that which has already been stockpiled or can be recovered and recycled from existing A/C systems. As the supply dwindles, motorists will be forced to have their A/C systems converted to the new "ozone-safe" R134a refrigerant."
 
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Its originally a R12 ('90) but since a shop will be doing the recharge itll become R134a anyways.

Remember that converting is a whole process. They have to evacuate the system, replace the dryer, etc etc. Mixing of the old R-12 lubricant and the new R-134a stuff wreaks havoc on the AC system. Might be wasting your time trying to lube it yourself.
 
Are you sure it's actual R12? There are plently of places manufacturing drop-in R12 replacements these days.

What's the price per can?


From an EPA website:

"The law was passed to discourage people from recharging leaky A/C systems. R12 refrigerant, which is used in all vehicles built prior to 1993, is an ozone-depleting chemical; so its sale and use is strictly regulated by the EPA. What’s more, production of R12 ends December 31, 1995. After that date, the only R12 that will be available will be that which has already been stockpiled or can be recovered and recycled from existing A/C systems. As the supply dwindles, motorists will be forced to have their A/C systems converted to the new "ozone-safe" R134a refrigerant."

It is about 45 a can and about ~1200 for a 30 lbs. car. It is the real stuff, for we have to go through a lot of EPA shit just to sell the stuff.
 
From an EPA website:[/i]

Odd. No mention that DuPont's patents on Freon were running out, and that it was outlawed just as it was to enter the open market for production. Nor that the lame-duck Bush was who signed the law in his final months in office. Can't wait to see what his kid does "for" us.

Ozone-depleting, my ass.

Glad I got the 30# jug the last day it was legal.
 
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