Mastercool 43306 Heavy Duty Cooling System Pressure Test and Refill Kit - 1 Pack | Professional Automotive AC Diagnostic & Recharge Tool for Cars, Trucks & SUVs | Ideal for Mechanics & DIY Auto Repair

Used set for 2 months no issue with light use. Compared to Snap, Mac, Cornwell or any other tool truck brand tool price wise, you can't beat it. The vacuum recovery tool alone is between 400-500 dollars US, then you need the adapter, if you work on multiple trucks, a set is more economical but a set depending on the brand can be 180 to 300. Don't forget a pressure tester which can run you another 300 to 400. These are all tool truck prices, comparing it to I think the 240 I paid for this is a heck of a value. But you do get what you pay for. Instructions say for best results to have the coolant needing to go back in a container above the device which yes will help, but I know who's gonna try and juggle 9 to 12 gallons of coolant on top of some ladder or something, most truck shops are mostly flat bay, lifts are an extreme luxury and I'm not even sure how'd having them would help in this case anyway. Coolant Inlet hose is also pretty short, won't even reach the floor after mounting refiller onto the reservoir,this is on a Kenworth T680 but the height is almost universal across brands, also used it on a Freightliner Cascadia. I extended hose with a barb and silicone hose just to make it work. Actually refilling worked fine but takes a while due to the small diameter wise Inlet, the connection is roughly 1/4. Comparing this to the 1/2 Inlet on the snap on tool is like night and day. I would have to cycle about 3 times with this tool to get all the coolant back,once the guage gets to 15 in the flow stops almost all the way and then you need to revacuum the system. This process alone is pretty close to 30 min just to refill, if you're flat rate that's a big hit to you. Snap on does it in one try most of the time and if a second vacuum is needed that's the last one for sure,even then with the second vacuum at most it'll take is 10 min, the difference in suction is crazy. Actual construction of the tool is OK at best, the body is made of plastic and instead of using regular cut off valves it has mechanism that you have to slide it back and forth for vacuuming and then refilling, sometimes the tool would get stuck and you would really have to push on it to slide it all the way. I found out you want to be careful with this after it failed on me, as there are o rings that seal it off and with time they will inevitably fail from the sliding, poor design if you ask me. The only ones I would ever recommend this to is a DIYer who would only use once every couple months to save some money from going to a shop to say get a heater hose replaced, this is still better then getting a coolant jug and putting it in the coolant pool and manually filling the system that way. It does also help, keyword help, with avoiding big air pockets in the system, still would recommend running your truck afterwards to operating temp just to make sure. The pressure tester does however work fine, but all it is ,is just regulator anyways, the tire around the tester is a neat little detail, only issue I had with it is where then end loosened up and I had to tighten it up a bit. I did up end up biting the bullet and buying a Snap on refiller and pressure tester and a Cornwell coolant adapter set. Honestly don't think I'll ever regret it, the difference in quality is like no other, the only thing I regret is wasting money on this but you live and you learn. This did however get me by for about 2 months so I won't completely sh*t on it. TLDR, if you're an owner operator who likes to do some work to your truck every once in a while go for it, just remember you still need a longer hose, but if you do this even somewhat at all regularly,spend the extra money and get the truck brand ones, I can only speak for Snap on as that's the one I have personally but I can't imagine the rest of them being as crap as this.