No I haven't. Do they make a set of gauges I can hook up to me? I'm pumping in 3, 25 oz Budweiser beers right now! Oh yeah that's my blood pressure tester back at the house. Ted, listen to stamp, he's done more AC work than probably every one here combined. Don't cheap out on the cans with the gauge. If you overfill the AC by more than 10 ounces, it can come out everywhere and damage the system. I once over filled my Datsun 280zx, it looked like Christmas under the hood. As to your question can you fill just the front, I thought their was one charge point, and it took 62 ounces. When you charge it, it's for front, and back. You should have settings front and rear at coldest, and fans on high, with doors open. Any of the others want to confirm/deny. I personally haven't had to charge mine. You should be able to rent the R134a gauges from one of the major auto parts tool rent programs. It's free once you return them unharmed.
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