Lisle 75630 Test Fluid

Works as intended.

Used this to confirm what was pretty certain, a head gasket leak. Sure takes the guesswork and time out of detecting head gasket leaks. I was already 95% certain one or both head gaskets were leaking using cylinder compression and leakdown tests and radiator pressure test. I like the ability to shutdown a cylinder bank and test for a leaking head gasket on one head or the other. Caution, if you do this, you will most certainly trip computer codes and the engine service light on the dash. You need to be aware that you have to check that your code reader (if you have one) will reset the engine service light. Not all will. Many will clear codes but not reset engine service light so you may have to got to a shop to have light reset. Some car models can be manually reset or there is some trick to reset. One of the other anecdotal aspects of this test is that you can tell which cylinder bank is leaking faster or slower. The color change for my testing was gradual, ie it went from blue to green to yellow. This shows that the color change is relatively proportional to the amount and rate of leakage. The color change for the right bank was pretty quick and the color change for the left bank took several minutes. I ran this several times on both a hot and cold engine. The results were generally reproducible.

item was as described and showed up on time

The product is for my husband to do a combustion leak test on my land rover range rover. The product once obtained was just fine, however your cutomer service dept. took it upon themselves to order the wrong one from my choices to have it delivered in a timely manner. That would mean it would be ordered from an outside source and I would pay shipping. I also had a choice to order from the amazon product and then there were two in my cart and I could not get the second one out. I have ordered from Amazon for many years and am very familiar with how to do orders, whether it be one click or regular, and even how to get free shipping. Imagine that. I was treated like a loser, like I had no intelligence on how to order products and tried to explain this but encountered difficulty with agent. The agent took one off and then proceded to charge me shipping although it would mean it would delay the delivery time of my product, if I ordered the amazon product. Like 3-5 weeks; I needed it sooner: well, I called and complained as the agent had promised he would make the change to free shipping as the item qualified: after an arguement, I was able to get the free shipping since they messed up on my order. It was not pleasant and I must say this is the first episode of this having happened; it was purely the agent treating me badly,trying to instruct me on how to delete the one click order as it apparently looked as if I had chosen that method. I think you could have avoided this all together if your agents weren't outsourced to a foreign country, where you get what you pay for. A country where women are second class citizens and that was the tone of this transaction. I did get the free ship, but I should not have to write and let you know that this particular employee, the second one, not the first, was rude and thought I needed to learn how to shop properly online. LOL on that. I shop online all the time....Imagine that.

NIASE MASTER TECH REVIEW Good value4 professionals. Purchased this item after a once over. I found it effective w/1 caveat. Be careful not 2allow fluids2 enter the intake during testing. This could result in a catastrophic fluid lock of any effected cylinder. In my case the blue color was already rapidly fading when a large bubble erupted directly into the cylinder pushing the test reagent &a considerable column of water up toward the top& out into the intake! I promptly shut the engine down2 avoid damage. BTW, if u c bubbles in the coolant reservoir, creamy white discharge on the engine oil dipstick or the same in the coolant; then u don't need the comfirmation granted by this kit. Any 1or all of the3 ARE comfirmation of a blown head gasket, or of a cracked head, or of a cracked engine block.

Glad I found this on Amazon. I haven't opened the bottle yet, but if it works as good as the stuff that came with my combustion leak kit (which I expect it will, since the bottles are identical), it will work like a charm and at half the price of ordering a replacement from the catalog. Make sure to test your results. That is, if a combustion leak ISN'T present judging by the lack of color change, exhale into the tube and see if the CO2 in your breath is enough to cause the blue to turn greenish-yellow. If not, then the chemical itself is faulty. The process I use is to let the car idle for about 5-10 minutes with the hood open, then get in and raise the RPMs to about 1200-1500 while in Park or in Neutral with the parking brake engaged. Then, I get out, open up the expansion tank cap, and a vacuum line to the engine, and use the vacuum to draw whatever gas is present in the expansion tank into my testing kit tube. I let it do that for about 2 minutes - if the color doesn't change, you're good to go.

Pues ni modo, me salió cambio de color de azul a verde, quizá la fuga no es grande y por eso no lo cambió a amarillo. Anteriormente, por falla de la bomba de agua hubo sobrecalentamiento, todo el anticongelante se fue al aceite y produjo fuga de aceite en las juntas de las tapas del motor por sobrepresión del vapor de agua en el aceite caliente. Hice cambio de bomba de agua y juntas de tapas (no de la cabeza). Para rellenar anticongelante hice vacío pero no lo sostuvo, pero aun asi lo rellene. Pocos meses despues tuve fuga de anticongelante en el radiador. Lo cambié y aplique vacío para rellenar antocongelante, el vacío se sostuvo pero en un nivel inferior porque cuando lo habia hecho antes del sobrecalentamiento si hacía un buen vacío, pensé que la bomba de vacío ya no tenia fuerza o que alguna junta tenia una fuga no visible. Ahora con esta prueba de cambio de color veo que si tengo una pequeña fuga quizá debida por el sobrecalentamiento y que no me deja hacer un vacío superior, aunque tampoco pierdo mucho refrigerante porque llevo meses con un nivel de refrigerante que casi no baja y tampoco tengo humo blanco en el escape. Ahora a buscar un sellador de junta de cabeza para que aguante hasta el próximo cambio de bomba de agua, porque la bomba esta dentro de mi motor y así aprovecho dos pájaros de un tiro. Actualizacion enero 2026 Volví a hacer la prueba antes de ponerle un sellado de juntas y me burbujeo todo el refrigerante caliente hacia afuera, lo que hice mal fue no tapar con el dedo la salida de la.bombilla negra, eso hace que se mantenga presurizado y no expulse refrigerante caliente. Agrego la foto de como lo tape y fue suficiente para tener otra prueba correcta.

Good refill for Lisle tester

Quick despatch and good price

received the item on time...

For a gasoline engine cooling system. May work with diesel, but I doubt it, since I believe that diesels put out less hydrocarbons. I think this company makes a diesel version of this kit. Make sure the cooling system is full, install this glass globe on the radiator opening/surge tank opening, fill with the magic mystery fluid, and connect it to a vacuum source. (Either to engine vacuum, or use a mity-vac style vacuum gun.) If there is a crack around the combustion cylinder, or a faulty head gasket, then you should see the magic mystery fluid change colour. This is just another quick way to check for combustion leaks. Other methods may be performing a cooling system pressure test, and checking for coolant on top of the pistons. Or, install a pressure test gauge on the cooling system, keep it at zero PSI, and run the engine. A bad head gasket may push pressure into the cooling system, and make the pressure gauge needle jump up. Or, perform a cylinder compression test.