How many refrigerant 20 oz bottles should it take to recharge my semi A/C? I’ve always used 3.

836312

{"text":"Barely in the green on the gauge that came with the can. AC still isn’t really cooling the truck off a ton. \nI have an ‘01 Western Star 4964EX\nDo semi’s just have really large amount of refrigerant in them?","videos":"[]","link":"{}","pics":"[]","canComment":true,"externalShare":false}

1339891

{"replyTo":"","text":"Should take 3.75 cans","replyToPid":0}

936953

{"replyTo":"","text":"Read the tag on the ac system it tells you the amount the system holds.","replyToPid":0}