Yep, Glen, it's called an air/water adapter; garden hose on one end and the valve stem on the other, put a little water in, turn off the water, release the air pressure, add more water, etc. Putting the antifreeze in is a separate operation. Of course, if you have the right kind of pump, I guess you could mix the water and antifreeze, then put it in, but I put the antifreeze in first, then the water. I think if you do a search on the topic, you'll find various and sundry ways to do. I have a homemade gadget that I put the antifreeze in with myself, but a small pump, sqeeze bottle, etc. with some tubing that fits on the valve stem can work. Naturally you take the valve core out to start with.