April 22nd, 2015, 04:21 AM
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Moderator
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Join Date: Jan 2013
Location: OKC, Oklahoma
Truck: Shopping for a 1960-61 4x4
Posts: 359
Thanks: 2
Thanked 11 Times in 1 Post
Rep Power: 169
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Re: OLD aftermarket AC
Kknotts,
If your system is an old R12 system you would use standard mineral oil.
Have a great evening,
-Jeannie
6066 GMC Club
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