Chemical Components of a DI Additive package-V; Small PPM Levels

[MolaKule]

In a New Oils Analysis, which we call a VOA, we typically see small amounts of the elements of Iron, Aluminum, and even Tin at times anywhere from 1 to 3ppm.

In the past, uniformed people, even those in Oil Analysis companies, have claimed that these elements are from Rusty steel containers or other bogus sources.

Contained within BITOG (you have to do your own searching) is the answer.

Additives perform a wide variety of functions within engine lubricants. This includes:
• Protection of engine surfaces. Many additives have anti-wear, anti-rust or anti-corrosive properties, which in combination prevent damage to coatings and surfaces within the engine.
• Modifying the physical properties of the lubricant. Viscosity modifiers and pour point depressants are used to maintain the desired physical properties (most importantly viscosity) at all temperatures and running conditions. This ensures adequate flow and viscosity of engine oil in all circumstances.
• Prevent and control the effects of engine deposits. Additives with antioxidant properties help slow the oxidation process the build-up of undesired engine contaminants and oil thickening. Dispersants and detergents aid in keeping engine surfaces and parts clean alongside controlling deposit mediated engine oil thickening
. • Increased fuel economy. Additives with friction or viscosity modifying properties can also aid fuel economy. This is via the reduction of friction between moving surfaces or providing favourable viscosity profiles that can lead to improved efficiency.

QUESTION: What is the name or designation of this additive agent that contributes to these low ppm levels?

See also:

https://www.atc-europe.org/public/Document%20118%20-%20Lubricant%20Additives%20Use%20and%20Benefits.pdf

Additives XII-Multifunctional additives

As a review of additives, let us do this: Name at least one additive that functions in more than role. That is, name one or more of the Multifunctional additives. [ July 21, 2003, 07:20 PM: Message edited by: Patman ]

bobistheoilguy.com

 

[MolaKule]

Since there no takers here we go:

In the above reference, it's the Metal Deactivators/Metal Inhibitors (MD/MI) such as the benzotriazoles-1-methanamines, organic tolutriazoles, and the thiadiazole derivatives.

When I was developing my own additive packages for my own formulations (and still do for some applications) I wanted some specifc MD/MI deactivators so I acquired some mercapto-1,3,4-thiadiazoles type derivatives, some benzotriazole type derivatives and some thiadiazole type derivatives.

Knowing that prior formulations had no modern metal deactivators and inhibitors and knowing their exact chemistry profile, I added the above chemistry and Iron and aluminum showed up in 1-4 ppm. Did I unknowingly contaminate the formula somewhow? I couldn't see how since all containers used were glass and were thoroughly cleaned after each operation.

So I added the (MD/MI) chemistry to a Group II oil of known analysis (3 samples) in the same proportions as the original formula and sent the samples to the lab. Back it came with 1-3ppm of Iron and or Aluminum.

Some may ask why didn't I just go to the big 2 additive companies at the time for my basic DI additive packages? Because back then they wouldn't talk to you unless your operation required at least a large number of kegs or barrels per week. Now, they are more willing to work with the smaller formulators and blenders because the DI additive market is more competitive.

Today, one can acquire a multifunctional Ashless Antioxidant, Corrosion Inhibitor, and Metal Inhibitor chemistry in one mix.

 

[Jetronic]

so, is the metal in the inhibitor package or stripped from the analysis equipment as the sample is getting analysed?

 

[MolaKule]

so, is the metal in the inhibitor package...stripped from the analysis equipment as the sample is getting analysed?

Nothing is getting stripped as the analysis is simply showing what the instrumentation is set to detect.