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It's 134A but I don't recall the amount. IIRC it was upped from the original factory fill on the older trucks. They are a little touchy to get amount and pressure correct or it won't cool correctly. I recommend having it done professionally. It's worth the $$$.
well my buddy does ac all the time just doesnt recall how much it takes so he can have it ready for when I get into town, but he is also worried about how much oil I lost also.
