DI Additive Package GF-5

[MolaKule]

Below is an older GF-5 DI additive package but quite typical of DI additive packages. This was a passenger car engine oil additive developed to meet ILSAC GF-5/ API SN and API SM performance needs.
I attempted to lighten up the pictures as much as possible but as you can see it is dark and thick because it is concentrated as most additive packages are.
Recommended treat rate at the time in Group II and III base oils was about 8.5% by weight. The PPD was included.

Specifications:
Flash Point, 135 °C:
Specific Gravity 0.975 at 15.6 °C:
Density, 0.973 g/ml at 15 °C
Kinematic Viscosity at 100˚C, mm2/s (cSt), 75:
Boron, 0.21% by weight
Calcium, 2.24% by weight
Molybdenum, 475 ppm
Nitrogen, 0.99% by weight
Phosphorus, 0.91% by weight
Zinc, 1% by weight
Total Base Number, 81 mg KOH/g.

 

[Sandstorm]

What's the shelf life of these additive packages? Is it better to keep them in 4°C since they're concentrated?

 

[MolaKule]

What's the shelf life of these additive packages? Is it better to keep them in 4°C since they're concentrated?

If they are kept at about 25C and low humidity they're good for at least 3 years minimum.

 

[bbhero]

Interesting to me how some of the additives are given by weight… Similar to dosing medications to people’s weight as well.

 

[Jetronic]

Interesting to me how some of the additives are given by weight… Similar to dosing medications to people’s weight as well.

Because weight doesn't change with temperature like volume does.

 

[MolaKule]

Interesting to me how some of the additives are given by weight… Similar to dosing medications to people’s weight as well.

In most blending facilities components are measured in terms of weight because the mixing vessels sit on "Load Cells."

High Capacity Load Cells | Canister, Pancake, Tension Link Designs

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In my lab I don't have load cells so I measure by volume. After the formulation is complete, the formula, in volumetric terms, is then converted to 'weight' values for blending.

 

[Sandstorm]

In most blending facilities components are measured in terms of weight because the mixing vessels sit on "Load Cells."

High Capacity Load Cells | Canister, Pancake, Tension Link Designs

Tackle heavy-duty weighing with confidence using Load Cell Central's high-capacity load cells, designed for robust applications where strength are key.

www.800loadcel.com

In my lab I don't have load cells so I measure by volume. After the formulation is complete, the formula, in volumetric terms, is then converted to 'weight' values for blending.

When I formulate (Chemotherapeutic) cocktails, I prefer, V/V. Although, W/W, and W/V are commonly used as well.

 

[MolaKule]

When I formulate (Chemotherapeutic) cocktails, I prefer, V/V. Although, W/W, and W/V are commonly used as well.

Whether a pharmacist or lubricant formulator, you need to be able to use various conversion metrics. I salute you.

 

[MolaKule]

Addendum: If anyone wants to further pursue the topic of chemical measurements and calculations, one of the more helpful texts is:

Pharmaceutical Calculations Ansel 15th Edition

book review title Pharmaceutical Calculations Ansel 15th Edition

atozpdfbooks.com

An 11th edition or earlier editions can be had from book sellers such as

https://www.alibris.com/booksearch?mtype=B&keyword=Pharmaceutical+calculations+ansel&hs.x=0&hs.y=0

Topics such as ppm conversions are discussed as well.

 

[Gentleman farmer]

Afton Hitec 9890

 

[MolaKule]

Afton Hitec 9890

Oronite OLOA55XXX series.