Stop Leak for R1234yf Systems, R-1234yf Stop Leak

Was a bit skeptical about this product before buying. Installed it added freon and pleased how it worked. Time will tell but the ac on my 2017 Silverado is blowing 40 degrees.

Helped stop leak in my Honda Civic 2017!

2018 Honda kept losing the expensive new type of refrigerant. Techs can't find any leaks. Had a tech add this after a recharge. We will see how well it works in July.

Excelente producto

Haven't used it yet went to return it seen they charge 50% to 100% and I'm responsible for return shipping up to $30 what are we shipping here. Seriously this products model should be it could work but if it don't good luck getting money from us we might charge you SMH. I needed the one with UV which is a different company but also stop leak tried to return customer service was not helpful 😕 good luck with purchase

Follow the instructions in the description, work super fast and make the a/c better than before, you have to have more gas r1234yf because you have to refill to the point 35-40 psi no more in the lower pressure port, I used on my suv since 2 months and no issues

The product seemed to work and AC felt better right off the bat but will have to wait how long and if it lasts. Instructions were unclear and safety recommendations also unclear. Not accessible if someone does not know how things work and such. Also labeling is confusing as to if the product has stop leak and refrigerant or just stop leak. Should be better

The Stop Leak R1234yf system comes with a can of Stop Leak and a hose for connecting the can to the low-pressure side of R1234yf systems. If you are familiar with recharging AC systems, you'll find this system reasonably priced and relatively easy to use. I decided to give it a try and, after separately adding R1234yf my system, my AC system has been working and blowing cold for a month.Three things to keep in mind are:1. This is Stop Leak and not R1234yf fluid for recharging your system.2. Although the hose has a valve, the valve pierces the can, so you have to plan on using the can up, or throwing-away what doesn't get used. The hose is specific to cans of Stop Leak and will not work on cans of R1234yf fluid.3. Plan to still have to add R1234yf fluid to charge your system. Get a system with multiple cans of R1234yf fluid and a hose with a gauge so you can see how much pressure is in the system.My story:The R1234yf AC system on my 2016 Honda Civic suffered from a slow leak that got resolved through periodic recharging. (The charge tends to last the whole season, maybe two.) My Honda dealer said they replaced most of the system (except two hoses) and, although there are documented factory issues, are no longer warrantying repairs. They want over $1500 to replace the two hoses and charge the system. R1234yf is expensive but I figured for less than a couple hundred dollars a charge can at least buy myself a few years by recharging the system myself. Hoping that where I have such a slow leak, this will be a permanent fix...so far, so good.Note: The Honda AC System has sensors to prevent compressor operation if pressure is too low, OR if pressure is too high. If it is too low you will need to put a jumper on the respective contacts in the fuse block to operate the pump. If pressure is too high, you will need to bleed some gas to allow the fluid in the can to pass into the system.