Lisle 75630 Test Fluid

Works great!

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.

This kit is super easy to use and I prefer this style as I already have a hand vacuum. I use the same one as for brake bleeding. This as opposed to the other kits that have a built in bulb but that's a spot where it can break and render the kit useless.Its super easy instructions to follow and can give you a look to see if exhaust gases are present or not in the coolant knowimg if there is head gasket integrity issues.

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.

Over the years of using a block tester, I never thought there could be a difference in quality of the fluid being used.Make no mistake this fluid is the fast responding to combusting gasses. When compared to the competition out there this fluid out performs in every aspect.Good quality, easy to use, easy to store and it doesn’t leak.

NIASE MASTER TECH REVIEWGood 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.

Haven't had a positive test on it yet but I'm sure it'll work. The instructions are written incorrectly as it describes using either a red or silver fitting connecting the hose to the tool but there is no red fitting. The one with 2 small holes in the side was apparently meant to be red as that's the correct one to use with engine vacuum and the other without the side holes is for a hand pump. When I used the appropriate engine vacuum fitting, it wouldn't pull air through it at all. I tried taping off one of the 2 holes as someone from lisle suggested but it still wasn't enough so I went with the hand pump fitting and it works but not well as it pulls air through so fast that it just looks like suds. I'll probably modify the engine vacuum fitting to make the holes a little smaller to try and make it work like I'd expect.All in all it'll probably get the job done but if you plan on running into blown head gaskets often enough, I'd go for the more expensive one that has a bulb built into it