670 a/c charge amount

Anyone know how much the system needs. 2007 670. Can’t find a tag or sticker. Anyone know where it’s usually located?

 

Thanks, found the sticker yesterday. Got it working good. Had to buy a new tap for the new self sealing cans. $8 at Harbor freight. It worked good once I figured it out. Instead of piercing the can and backing it off, you just pierce can and tighten it down, refrigerant flows. Maybe that info will help someone else. Today I charged up a Coronado glider. Looks like I’m the new A/C guy at the Shop. Lol. Boss says he’s impressed with my knowledge. Sure got him fooled. Lol. Thanks again.

 

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n this Volvo it was right where @062 said. Upper drivers side firewall. Has all the model#s and capacities listed. 660-3.50lbs. etc.