[W126 Coupe] PAG VISCOSITY FOR NIPPONDENSO 10P?

[Steve Nervig]

On Jun 14, 2008, at 7:17 AM, Dick Spellman wrote:


> Just need to confirm that the Nippondenso Compressors on MB use PAG  

> 46 when operating on R-134A.  Can anyone for certain confirm this?

>

> I am just finishing up the emergency replacement (thanks again  

> Jonathan) of condensor, R/D, Exp. Valve, senders and seals on the 86  

> 300SE started early this am.  It had a very slow leak (1 year) on  

> the edge of the condenser where this car was once impacted by a  

> 100lb dear.  Finally got to the point where replacement was needed  

> the other day.

>

> So, I'm ready to button things up, pull a vacuum and recharge once  

> again.  It's been running r134a for five years now and vent temps  

> normal at max were 47F and with this leak worsening it was  

> approaching 60F when I checked pressures only to learn the Spring  

> charge was already on the way out and the dye was most apparent  

> where the previous accident had occurred.

>

> Anyway, PAG 46 for Nippo 10P?  Thanks in advance.

>

> Regards,

>

> Dick


Hi Dick.

This chart suggests that 46 is the correct viscosity:

<http://www.compressortech.co.uk/downloads/CT_Pag_Oil_Reference_Chart_05.pdf 
 >

For what its worth, the R-134a tag on my car says to use "Densooil 8."

Regards,
Steve

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