Review on 🆓 ComStar A/C Zero-Leak: Instant Stop Leak Solution for A/C Systems - Non-Hardening, Polymer-Free, Eco-Friendly - Made in USA - 4 Ounces (90-700) by Anil Campbell

This product helped me, it fixed what appeared to be a large leak on the A/C evaporator core on my 2008 Trailblazer. This was my last desperate attempt before having to decide whether to pay over $1000 for labor + parts or 2+ days and around $300 for parts to replace the atomizer core itself. No air conditioning in a traffic jam with temperatures consistently above 88F year-round (rarely below 70F even in "winter") isn't really an option here in South Florida. As with most cars, replacing the evaporator core on a Trailblazer requires you to remove the entire dash, center console, steering wheel, radio, audio amp, and all manner of wiring and connectors to get to the plastic and remove it. The case that houses the atomizer core is definitely not a quick weekend project unless you're a pro making a living out of it. In short, none of the other highly rated leak protection products I tried prior to Comstar A/C Zero Leak worked. I have refilled the A/C three times (4-8 ounces or more of leak stop product plus pure R134-a refrigerant), each time with a different product and following the manufacturer's instructions. I've tried to only use products that claim not to clog your compressor, battery, choke pipe, or air conditioner every time the air conditioner goes from freezing to blowing hot air immediately after charging. within 2-3 days max. This SUV is a used undercover unit I bought at a police surplus auction. I'm pretty sure their repair crew tried to fix the problem before scrapping the car, everything else about it works fine. Two months ago I purchased this product (Comstar A/C Zero Leak, 4oz) and an A/C repair kit which includes a vacuum pump, pressure gauge, vacuum pump oil, hoses and accessories (https://www.amazon.com /gp/ product/B077PY6NHR /ref=ppx_yo_dt_b_asin_title_o01_s01?ie=UTF8&psc=1 ), I also purchased 4 oz of PAG oil and enough pure R134 refrigerant to fill the system, all for under $170. I took the SUV to my mechanic to evacuate the AC with the appropriate equipment (most AC shops here will do this for free), then added about 2 ounces of this product by pouring directly into the attached hose. to the low pressure port before opening any valves and proceeded to prime the system with a small amount of PAG oil (2 ounces in my case) and an amount of R134-a as directed in the owner's manual. SUCCESS! It's been two months since I've done this and my air conditioner stays so cold that I rarely have to crank the controls above minimum fan speed in this muggy Florida summer. I use a Bluetooth OBD-II reader with a mobile app to monitor my A/C internal pressure (reported by the high pressure sensor) and engine and transmission temperatures. My air conditioner's high pressure hasn't dropped at all. During this time. I don't know if this will keep my AC running for months or years, but so far so good.