How much oil should I add to my GMC Sierra?

This would put the R134a system charge at 45 to 50 oz. Start with 45 oz and more to if needed to get the system to the correct pressure range. The oil total system capacity is 10 oz if equipped with the A6 compressor and 8 oz if equipped with the R4 compressor. R-12 used mineral oil but R134a uses PAG oil.

Do you have to use PAG oil for an A / C compressor?

“Universal” A/C compressor oilsare often PAO-based and are not the same viscosity as the PAG oil recommended for a specific type of compressor. This can lead to poor lubrication and premature compressor failure. Newer vehicles with R-1234yf A/C systems require a special 1234yf compressor oilspecified by the vehicle manufacturer.

What kind of Oil can I put in my Chevy truck?

If your vehicle was originally charged with R12 refrigerant, for example, the oil type specified, ‘mineral’, will not apply. Additionally, General Motors issues Bulletin # 02-01-39-004B replacing PAG 150 oil with a lower viscocity oil. Thus, TechChoice now indicates PAG 46 (P46D) oil for those vehicles. All Engines w/ Front & Rear AC …

How much Oil can you put in an A / C compressor?

A/C Compressor Oil Capacities If you are replacing a compressor or other A/C system component, it is important to replace any compressor oil that has been lost when parts are changed. The total system oil capacity for many late model passenger car A/C systems is only about 4 ounces (120 ml).

How much PAG oil is in the accumulator?

For the accumulator 105 ml or 3.5 oz The link you provided shows 8 ounces, this is the total capacity on the system, it does not show the breakdown for each component. The accumulator stores pag oil when the system is off just like all the other components, when one flushes or replaces all or individual parts oil must be…

How much oil to add to new accumulator?

If less than 30 ml (1 fl oz) is drained-add 60 ml (2 fl oz) to the new compressor. If more than 30 ml (1 fl oz) is drained-add same amount that was drained to the new compressor. Accumulator-Add 105 ml (3.5 fl oz) of new oil to the replacement accumulator to compensate for oil retained by original accumulator desiccant and bag assemblies.

What are the oil specs for an A / C system?

All oil specifications assume that A/C system has been properly cleaned, and new accumulator / filter drier has been installed. Specs are for total system capacities. Always refer to under hood decal as the primary source for refrigerant and lubricant information. Refrig System Oil Capacity Year Model Type Oz. Type Oz. Premium Standard CL