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Author Topic: Pag or Ester?  (Read 7412 times)

Offline 82silverado

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Pag or Ester?
« on: June 14, 2024, 03:24:56 pm »
82 silverado. New components throughout. Lines, condenser, evap, drier, compressor. Since there is no mineral oil from R12 should I use pag? And if so which one?
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82 Silverado 454/700R4
86 Buick GN
02 WS6

Offline Shifty

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Re: Pag or Ester?
« Reply #1 on: June 14, 2024, 04:14:46 pm »
If you've converted to R134a, then pag.  GM uses a lot of 150 weight in the earlier stuff, but if changing to a Sanden, then 100....8 full ounces.   

If you're still running r12, then stick with mineral, ester only if absolutely necessary. 
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87 V20 Standard Cab Longbed (current)

87 R30 3+3 Longbed (days of yore)

98 C2500 ext cab longbed

Offline 82silverado

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Re: Pag or Ester?
« Reply #2 on: June 14, 2024, 05:04:18 pm »
Thank you. Glad I asked.  I assumed 46 and bought a couple bottles. Will take them back in the morning. Stock style A6 long compressor.
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82 Silverado 454/700R4
86 Buick GN
02 WS6
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