The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

JimKshortstep4x4 · 05-30-2006, 08:31 PM

The amount of R-12 recommended for the system is 3 lbs 4 fl oz for trucks, (Burbs with the rear AC is more). 80 percent of the R-12 capacity seems to be a good starting point (approx. 2 lbs 10 fl oz) but we have had to add a little sometimes.

I would be curious about what others have experienced.

Jim

05-30-2006, 08:31 PM	#8
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: 134a question The amount of R-12 recommended for the system is 3 lbs 4 fl oz for trucks, (Burbs with the rear AC is more). 80 percent of the R-12 capacity seems to be a good starting point (approx. 2 lbs 10 fl oz) but we have had to add a little sometimes. I would be curious about what others have experienced. Jim