Automotive Air Conditioning Information Forum (Archives)

Provided by www.ACkits.com

We've updated our forums!
Click here to visit the new forum

Archive Home

Search Auto AC Forum Archives

Yet another "how much oil" question :)

someotherguy on Thu July 23, 2009 9:41 PM User is offline

Year: 1998
Make: Chevrolet
Model: C2500
Engine Size: 5.7
Refrigerant Type: R134a/RB276
Ambient Temp: 98F
Country of Origin: United States

I'll try to keep this one straightforward, though it's a bit of a Frankenstein. I'm using the complete A/C system from a 1998 Chevrolet C2500 truck and transplanting it into a 1994 3500HD truck that has a 1996 engine in it. At any rate I'm using all the parts from one vehicle: compressor, hoses, evaporator, condenser, switches, control unit, etc. so for all practical purposes the vehicle is the 1998 Chevrolet C2500.

The compressor is a rebuilt, but appears to still be the HT6 design like original. System was working fine when I removed it from the donor truck and taped up every connection to prevent any dirt from getting in. I'll be replacing all O-rings, the accumulator, and the orifice tube. All used parts will get flushed with solvent.

So, how much oil to use?

Would it make a difference in how much oil I use if I swap from R134a to RB276 ?

I haven't seen a lot of talk here about RB276 but it's what my A/C guy prefers to use. It's working excellent in my other truck which was also R134a from the factory. I really hope to not start a debate about the merits of refrigerants, because I'm really not equipped to participate in that, I'm just the guy putting the truck together.

Thanks,
Richard

Chick on Thu July 23, 2009 10:08 PM User is offlineView users profile

8 ounces of PAG 150 if using R134a, no idea what oil to use with your blend...

-------------------------
Chick
Email: Chick

---------------------------------------------

Freedoms just another word for nothing left to lose

Chick on Thu July 23, 2009 10:12 PM User is offlineView users profile

Oh, and be sure to label what refrigerant is in there if other than R134a, as your "guy" might not be around forever and you will really piss someone off if they contaminate there recovery tank with a blend... and also EPA laws require approved replacement refrigerants with the proper fittings for that refrigerant so mistakes cannot be made, doubt he does it, but you should know what is right and wrong and make your own decision from there....

-------------------------
Chick
Email: Chick

---------------------------------------------

Freedoms just another word for nothing left to lose

someotherguy on Thu July 23, 2009 11:44 PM User is offline

Thanks Chick; 8oz it is.

Regarding the change in refrigerant, I know it's an issue, so on my existing truck that has been converted - I've stuck some foil duct tape across the R134a sticker on top of my accumulator and wrote on it clearly with permanent marker - RB276. Maybe not as good as an official conversion sticker or anything, but it's a sincere attempt, anyhow, and it's in the correct place where someone would be looking for what type of refrigerant was used.

Richard

daman on Fri July 24, 2009 1:08 PM User is offlineView users profile



-------------------------
'00 Pontiac Sunfire 2200 I4 SFI
'99 Chevy 4x4 Z-71 5.7 Vortec v8 CPFI
'97 Chevy 4x4 6.5 Turbo Diesel 2500
'95 Pontiac Grand Am GT 3100 v6 SFI
'88 Chevrolet Camaro IROC 5.7 TPI(49,000 original miles)

someotherguy on Sun July 26, 2009 12:08 PM User is offline

Quote
Originally posted by: daman


Back to Automotive Air Conditioning Forum

We've updated our forums!
Click here to visit the new forum

Archive Home

Copyright © 2016 Arizona Mobile Air Inc.