Automotive Air Conditioning Information Forum (Archives)

sk8tr on Wed June 15, 2011 6:25 PM

Year: 2004
Make: Subaru
Model: WRX
Engine Size: 2.0 Turb
Refrigerant Type: R-134
Country of Origin: United States

New to forum. Complete rebuild on my 2004 Subaru WRX. New Compressor and system flushed. Can't find any source that indicates how much PAG to put in New Compressor compensating for the dry system (Flushed lines). Appreciate anyone with specific knowledge for this vehicle chiming in. Also, if there are any unique concerns for charging this particular system.

Thanks in advance for any and all help.

R/

JJM on Wed June 15, 2011 9:54 PM

Specs show 180 grams of oil for the Calsonic CR14... or in real measurement units: 6.34931 ounces. R-134a charge is 500 grams or 17.6369 ounces.

I'm pretty such Subaru uses medium viscosity PAG, or PAG 100, but that I can't confirm. Can someone here back me up on this?

Joe

TRB on Wed June 15, 2011 11:22 PM

I've got PAG 100 also.

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sk8tr on Wed June 15, 2011 11:47 PM

Thanks Joe,

That helps tremendously. Does the 6.35 ounces also account for the rest of the system or do I need to add additional oil for the rest of the system?

R/

mk378 on Wed June 15, 2011 11:52 PM

That specified amount is the total system amount. It is based on all the parts being new and dry. Do not use more.

sk8tr on Fri June 17, 2011 9:55 PM

Hey. One more question. Do I put the new PAG in the drain port on the compressor or do I dump it in through the High or Low side ports on the compressor? Also, I remember reading that I need to rotate the compressor about ten times after the new oil is in. Does that sound about right to you?

Thanks again.

R/