Liqui Moly Radiator Stop Leak | 250 ml | Cooler additive | SKU: 20132

Audi A4 B7 with 130K miles. On the floor of my garage I discovered a few drips of coolant where my turbo/ECU/cold air box would be. I knew there were AC lines under the engine in that area and I thought maybe I sprung a leak in one of those lines. When I looked under the car I saw where the drip would form for the coolant, I was dripping off a weird spot, the K frame that holds up the engine, so it really was nothing near the far right side of the engine. With a flashlight I looked and found the source of the leak, it was coming out of the side of the aluminum engine block! There was a drippy triangle of coolant dried up coming from the same spot. Oh no! What I discovered was that my engine has suffered a BLOWN HEAD GASKET. I know this Audi A4 2.0T FSI engine runs hot but I didn’t expect it to blow an engine seal. I was bummed. So now I started my research. On the Audi forums and in Amazon reviews. I eventually chose Liqui Moly because it was highly recommended for aluminum engines. I ordered one bottle, followed the instructions with the install and everything was great, no drops of coolant on the garage. Problem solved! Then after about a month I got another small drop on the garage floor, obviously the Liqui Moly Radiator Stop Leak worked but the engine hole in the seal was larger than a one bottle fix. No big deal, I added a second bottle! Now two-three months later there is no coolant leak on the floor and the engine temperature is regular just as it always has been. This engine sealant had no adverse effect on a thermostat or anything else. Liqui Moly is made in Germany and seems to be tailored to the Euro Car industry. I can tell you it works. I’m very pleased. I would recommend.

I recently tried Liqui Moly Radiator Stop Leak in my older vehicle that had developed a small coolant leak, and I’m genuinely impressed with the results. I’ve used other stop leak products in the past, but this one stood out for its ease of use, fast action, and trusted brand quality. The instructions are straightforward—just shake well and pour it into the cooling system when the engine is warm (but not hot). Within minutes of running the engine, I noticed the coolant level stopped dropping, and the leak around the radiator seam appeared completely sealed. What I appreciate most is that it doesn’t clog the system or create sludge, which can be a problem with lower-quality products. My heater continued to work perfectly, and the engine temperature stayed normal. It’s compatible with all types of coolant, which adds to the convenience. Overall, Liqui Moly Radiator Stop Leak is a solid, trustworthy product that can extend the life of your radiator and save you from costly repairs in a pinch. Highly recommended as a temporary solution or preventative measure.

So I had a small leak in my radiator for quite a while and I was sick of topping it off and seeing a small puddle in my driveway and smelling it so I had bought this stuff a friend a long time ago had recommended liquid Molly products and I have been using them some other products I use on a regular basis I am happy with this product here I poured it in I went for a 20 minute drive in it's been 4 months now and I haven't had one drop of antifreeze on the ground I can't say enough how good this product works and it doesn't clog your cooling system up it doesn't do any of that so you don't have to worry about it clogging it up this product works very very well for the money

This took 6-7 hours of driving to shore up my slow radiator leak. Its not nearly as fast acting as its advertised to be. I get that every leak is unique and happy that it eventually started working but it needs to be advertised honestly. I have used other Liqui Moly products with positive results.

Such a great product and should be put into any car once it gets a little older. Or even from the start. Prevents these little leaks that nobody can find but eventually every car develops over time and makes them smell of coolant under the hood. All my Jags had it. And now our Volvos need it too.

I bought a mint 94 Plymouth Voyager with very low miles this past year, and its my garage queen. Well, seeing that it has sat a lot, and is 30 years old, I noticed the other day it had developed a heater core leak, fogging up the windows and the entire interior smelled of anti-freeze. I cringed at the thought of tearing apart a 30 year old chrysler product dashboard (brittle plastics come to mind), so I decided to take the risk with the Liqui Moly stop leak for the cooling system. Holy crap... within MINUTES of driving around after adding only half the can to my radiator, the heater core stopped leaking! And thats with HALF the can, or maybe less than that because I spilled a little of that even. Super happy it is fixed, and when it stops working hopefully I'll be dead by then and it will be the next persons problem to replace the heater core lol

Put this in a 2008 Saturn Vue slow leaker radiator, first app worked for a while then continued, second app did nada and I had to bite the bullet and replace the radiator (what a job). Post mortem, I never could find the exact leak spot but it was a plastic/ aluminum radiator that was never made to be fixed like the old copper/brass ones. Bottom line, save your money for the purchase of the new radiator because this stuff is a notch above useless.

Cured a leak in my 1.8 Audi turbo for a year now … like I put a new radiator in it … and I run it hard … Was loosing about a quart of coolant every 5 miles , now fine … temp guage normal … full heat… perfect …. Doesn’t loose a drop now

جيد

Working good

Worked on my 2000 WV Jetta, redused slow leak from the radiator sides after a few days and stopped completely after a couple of weeks.

Mi S10 1994 4.3 tbi empezó a gotear por encima de la marcha, aplique la mitad de la lata y detuvo la gotera casi de inmediato, llegué a casa, estacione el vehículo y dejo de estar la mancha, lleva una semana y mi nivel de anticongelante dejo de caer, me funcionó mejor que artículos baratos de AutoZone

Excellent