[V6-12v] A/C oil viscosity

[Tom Christiansen]

At 07:10 PM 6/16/2005, Clive Young wrote:
>When all else fails...google it ....looks like PAG 46 according to this
>article..
>
>http://www.technicalchemical.com/pdf-files/LubricantGuide3.pdf

Yeah, I found that too... Here's the deal:

I have a Zexel compressor which I bought used from a list member. Makes it 
really easy to read the model number and such. The model is DCW 17B. On the 
compressor, the proper Zexel fluid is listed as ZXL100 (which according to 
above document, ironically, is ISO viscosity 46). The Bentley manual lists 
the fluid as Audi p/n G 052 154 A2, which according to above document is 
ISO 100 viscosity. By searching specifically for fluid information for 
Zexel compressors I found another document stating that it should use 
PAG-46. So that's what I'll get.

There's no debate about the amount of fluid. 250 ml +/-20 ml. So an 8-oz 
bottle (237 ml if memory serves) should work.

One site suggested adding half the amount to the compressor, the other half 
to the receiver drier. It should help distribute the oil evenly throughout 
the system. It's important to rotate the compressor shaft by hand 10 times 
before starting the car to avoid an oil surge through the compressor.

I think I'm all set for the compressor job. I have the receiver/drier on 
the way by UPS ground from The Parts Connection. I have 21 o-rings (bought 
a complete set from the dealer). I have the restrictor valve gizmo. And I 
have a compressor that needs a new clutch (which I intend to transplant 
from the old compressor). I've already machined the two "special" tools 
needed for the clutch transplant. Now I just need time and a level garage 
floor...

Tom