OEMTOOLS 24444 Cooling System Refiller AirEvac Kit, Quickly Refill Cooling Systems, Eliminate Trapped Air, Prevent Engine Damage, Universal Adapter, Leak Test, Includes 5 Bushings & Storage Case

So far so good. Comes with the right parts. I tested it and it holds vacuum on a bottle. Have not used it to fill, yet.

Used to purge air from my Lincoln MKT cooling system.

I recently got my hands on the Coolant System Tool, and I have to say, this nifty gadget has made maintaining my vehicle's cooling system a breeze! As a DIY enthusiast, I love getting under the hood, but coolant systems have always intimidated me a bit. This tool takes that anxiety and tosses it right out the window.From the second I unboxed it, I was impressed by the quality. The materials feel durable, and the design is intuitive even for someone like me who's still getting their feet wet with car maintenance. I was particularly glad to see that the instructions were clear, making the whole process of flushing the coolant system smooth and efficient.What really stood out was how much time it saved me on my latest oil change. The tool disconnected and released old coolant without any mess, allowing me to refill the system quickly and confidently. Plus, it's cut my trips to the mechanic in half—something my wallet greatly appreciates!

This tool turned out to be a mixed bag. The tool is well constructed and does what it's supposed to do quite well. Very easy to use and nicely constructed. While the coolant tank adapters work, specific caps for the application would offer a much more robust solution.What I didn't like was the tool mfgrs. quality control. My "1st" tool's vacuum gauge did not work and actually had rust around the screws on the gauge and around the fitting from the gauge to the manifold block. Luckily, I bought this tool from Amazon and received a replacement the next morning. I had originally contacted the mgr., but the resolution process/time was deemed unacceptable.My second gripe is the tool's packaging. It comes in a very nice blow moulded case, but everything just flops around inside. Makes zero sense.Bottom line is, It works very well if you get one that works. The method for attaching the tool to coolant fill tank is a bit lacking, but does work.

I found out about cooling system vacuum refiller kits while researching how to change the coolant in my car (which is notoriously difficult to change due to the tendency to get air bubbles and air locks upon a coolant change). Some people were reporting spending 8 to 10 hours doing ALL KINDS of crazy things to try and fix a hard to clear air bubble in my type of car. So, after a ton of research, I found out that these kits make changing your coolant literally a piece of cake and it only takes a couple minutes. This would be a huge advantage because I'm going to do a 'home flush' with distilled water, which means draining and refilling 3 or 4 times to dilute all the old coolant out (then refilling one last time with 100% strength new coolant).After researching, I found out that there is a leading brand of these vacuum coolant kits that costs approximately double what I paid for the OEMTOOLS 27066 kit. That brand gets great reviews, but I didn't want to spend well over $100 for my coolant flush. So, I picked the tool that seemed like the next best quality, and I was NOT disappointed. This thing worked GREAT! It literally took 30 seconds to place the cooling system under vacuum, and another 1 minute to fill a gallon and a half of distilled water back into the system. And NO air lock afterwards.Here's some things I learned:1) Pay attention to the reviews and closely look at the pictures of the kits you are considering. A number of cheap kits (not this one) look the same and get consistently bad reviews. The OEMTOOLS kit (and other branded differently but identical kits) get pretty good reviews. Also note that some of the kits do not have different expanding rubber bushings to exactly fit different sized radiator necks. They just have a tapered rubber 'cone' that you cram in there and hope it holds. I really prefer the custom fit of the OEMTOOLS style kits.2) When I first tried to use this kit, it did not work at all and would literally draw no vacuum despite running my air compressor for several minutes. I knew that my cooling system was solid. I knew that I had the tool well sealed in the radiator neck. Honestly, I thought I possibly had received a defective tool, or maybe my air compressor was not big enough to create the vacuum. I slept on it, and figured it out! My overflow hole is very low in the neck, and the tool was not able to seal that passageway. Simple fix was to remove the hose to the overflow tank and use a standard rubber vacuum hose cap to plug it. Once I did that, my small compressor created the required vacuum in literally less than 30 seconds.3) I have a very small pancake-style compressor. I think it is 2.7 CFM at 90 PSI. It had NO TROUBLE AT ALL pulling the required vacuum. I did not need a huge shop-size compressor.4) The other reviewer is right...the air compressor (male) fitting that comes on the kit is not the standard 1/4" quick-disconnect. It looks like it is bigger...maybe 3/8"? It definitely did not work and I had to temporarily rob one from another tool. FYI, in case you want to purchase one in advance.Hope this helps....this was a great tool and made this job super easy.

DONT BUY THIS TOOL YALL. I do mobile service and the first time ever used it the gauge does not work and one of the air outlets was leaking. Very upset that I spent 100$ and the tool doesn't work the first time

This tool is incredible. This is definitely a must have because I’ve had to bleed my coolant system before and if you have a G35 or 350z then you already know how difficult it can be. With this tool I was done in less than 5mins literally. Just open the drain plug from the radiator let it all bleed out (make sure you open the radiator cap so it can properly bleed) then you attach this tool to the radiator and make sure you fill the feeder line first and close the valve then you create the vacuum with the tool until it reads -25. Hopefully you got a good air compressor. Once it’s at -25 you close the vacuum valve and wait 20secs to see if it goes down which it shouldn’t. After that you just open the filler valve and it will immediately start to fill the system and the pressure gauge will go to 0 and you are good to go. Honestly get this tool.

Great product. Solid. Works great. Just don't forget to flush it out with water and let dry and should last you a long time. You can't beat the price for such a great quality, built tough.