Staying R12... What oil to use?

[Overlord475]

Recently picked up another E30. The system is empty but holds a good vacuum for over 30mins.

Plan to put a new dryer on and recharge with R12 as I already have several cans.

Bentley says to use Suniso 5GS oil but it is unobtainium.

What oil are you guys using? PAO 68?

See Page 11 -->

http://www.autototal.ro/download/Cataloage/Catalog%20Behr%20Hella.pdf

Thanks

[Overlord475]

Thoughts? It's the correct viscosity (S.U.S. 500)....

http://www.ackits.com/merchant.mvc?Screen=PROD&Store_Code=01&Product_Code=41-50000&Category_Code=

[bmwstudent]

pag oil or ester oil. Really it won't make a difference. Just try to flush the old oil out of the system with a/c solvent and compressed air. I've used pag oil or ester oil many times with no ill effects. Both oils plus the solvent are available at napa no problem

[jlevie]

Solvent in the compressor is a bad idea. To change the oil, remove the compressor and drain the oil. Refill and turn the compressor by hand a few times, then drain and refill again. Flushing the lines, evaporator and condenser would be a good idea.

[bmwstudent]

I didn't mean in the compressor but rather to flush the lines, condenser and evaporator.
it will require taking the lines loose at either end and flushing the components individually.

[Overlord475]

Found it!

http://www.carquest.com/webapp/wcs/stores/servlet/product___10151_-1_10651_1425340_36330?aces