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GM P30 Chasis 454 Engine, 1992 Fleetwood Coronado Tom Lopez 9-10-13  
I have removed my a/c compressor and have flushed the system. I need to know how much and what type of oil to put back in. It has R12 system. Will be using Duracool which is a direct R12 replacement. I think the original amount of R12 in my system was 3.5 lbs. My compressor is a Sanden SD-709 model U7499. I am also replacing the dryer and expansion valve. Hope you can answer my questions, no one else can.

This is in a 1992 Fleetwood Coronado motorhome
GM chasis with the 454 engine
Re: GM P30 Chasis 454 Engine, 1992 Fleetwood Coronado BUBBA THE BUS TECH 9-11-13  
I will paraphrase from the duracool website: Use any AC Refrigerant oil you want, its compatable.

I recomend you buy Duracool Oil Chill

You will have to guess but add about 2/3 what you drained out.

Then there is a neat little sample system that measures the % of oil in the refrigerant in a running system. Way cool. (pun Intended)

Finally read the Dura Cool Web Site. They have a tech help system.

Re: GM P30 Chasis 454 Engine, 1994 Fleetwood Coronado Wally Mack 8-12-14  
I have no brake lights and I've checked the bulbs,fuses,volt at the switch is good but nothing at the plug at rear about 6 feet from the back on the drivers side. I have emerengency flashers,tail lights and turn signals.
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