LIQUI MOLY Additives - Tested, Tried, And True

Blog Feature

Whether you're looking for an additive for your oil, fuel, or cooling system, LIQUI MOLY has you covered with a wide range of products for every system.

How does the saying go, "if it seems too good to be true, it usually is?" I don't know about you, but I've always felt that engine oil and fuel additives were purely "snake oil", making claims of performance increases and benefits that were just too good to be true—much like your buddy's "butt dyno" claims of the added 15HP his new cold air intake gave him.

Since we refuse to sell you anything that we wouldn't put on or in our own cars, I spoke directly with the engineers Daniel and Tobias at LIQUI MOLY that formulate and test all of the additives that they produce; the very ones we sell. While I expected in-depth answers and the typical marketing spiel, I didn't expect quite the amount of time and testing that goes into the development of a single additive. 


LIQUI MOLY Additive Formulation and Testing:

989—that's how many formulations the engineers create before reaching one that works as effectively as they're aiming for. That goes for every individual additive that they produce for your fuel system, engine oil, cooling system, and even your power steering system. 

When it comes to fuel additives, one of the many parameters is the resistance to corrosion. As seen in the photos below, the engineers use test methods that combine 10% water by volume with the gasoline without the additive, one with the water and additive, and then multiple controls. They test the samples for twenty-four hours to determine how well each additive resists flash rust on the steel testing rods. 



Another important characteristic of fuel additives is their cleaning ability inside your engine. To test this, they run test-bench engines in the lab with fuel that's known to be dirty for forty-eight hours before draining the engine of the fuel. Once empty, the engine is scoped and photographed to determine how "dirty" it is. After a baseline is established, new, clean fuel with LIQUI MOLY additive is added, and that engine is then run for an additional twenty-four hours. After that, the engine is scoped and photographed to compare the level of cleaning. Let me reiterate, this is done for every formulation of every fuel system additive. 

Not only do the LIQUI MOLY engineers test every additive in the lab engines, but they also test them in the real world in real cars. They don't use just random cars either; instead, they test all of their products in their personal vehicles. And just like the engine testing in the lab, each engine is scoped and photographed before and after running the additives. So, like all of us here at FCP Euro, LIQUI MOLY will not sell a product that they won't use in their own cars



Following along the same lines of their extremely stringent development and testing is the standard of quality control that they hold themselves to. Every step of the process has multiple controls in place to guarantee the product you're putting in your engine does exactly as it's meant to do without harming any of the components. No matter the additive, every batch is tested, as well as every single can that leaves their facilities. Using IR-Spectroscopy and the refractive index, every can is tested to ensure it receives the correct product, the correct volume of product, and that the product itself is within specifications. 

The quality control process in place allows flaws in production to be detected, and the production halted within five minutes of the initial finding. This ensures that if there's ever an issue with formulation or incorrect filling, that only a small amount of product is affected and that none of it ever reaches the end consumer. 

As an added insurance for the consumer, one can from every batch is stored in a vault for the entirety of the product's shelf life, whether that's five years or more. By doing this, if you should ever add a LIQUI MOLY product to your vehicle and have issues with it, they can test the exact batch that your product came from and determine if their product was the cause.


After speaking with the engineers from LIQUI MOLY, I wouldn't hesitate to run any product from their line of additives. The amount of time, testing, and quality control that goes into them, and knowing that the creators of the product use each and every one in their own cars (at least for me) inspires confidence in the products.


Explore LIQUI MOLY oils, additives, and more.

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