CG model of a working V8 engine with explosion

Hybase® detergents and fire-side corrosion inhibitors

The Hybase® portfolio offers a range of high TBN overbased detergents and fire-side corrosion inhibitors.

Overbased detergents are additives designed to clean the metal surfaces within a fired engine and prevent the build-up of deposits. The insoluble by-products of the combustion process are removed by the detergents in the lubricants. Detergents find extensive use in marine, passenger car motor oil and heavy duty diesel applications. In addition to cleaning the metal surfaces within a fired engine, overbased detergents also help neutralize acidic combustion by-products to prevent corrosion within the engine. For neutral TBN overbased detergents, see our Lobase® portfolio.

Fire-side corrosion inhibitors are additives that are designed to prevent corrosion from combustion products resulting from the burning of fuels containing sulfur, vandium and other heavy metals. These products are primarily used in heavy fuel-fired turbines for electrical power generation.


 Hybase® calcium sulfonate detergents

Hybase® Carbonate form Calcium, wt% Calcium Sulfonate, wt% TBN, mg KOH/g Viscosity @ 100°C, cSt
C-231 Crystalline 10.5 18.5 285 100
C-311 Amorphous 12.0 28.0 305 75
C-313 Amorphous 12.0 28.0 305 75
C-320 Amorphous 12.7 25.0 320 100
C-401 Amorphous 15.7 19.3 418 70
C-402 Amorphous 15.2 18.5 405 75
C-400 HS Amorphous 15.0 25.0 395 90
C-500 Amorphous 18.5 20.0 495 200

Hybase® magnesium sulfonate detergent

Hybase® Carbonate form Magnesium, wt% MagnesiumSulfonate, wt% TBN, mg KOH/g Viscosity @ 100°C, cSt
M-401 Amorphous 9.3 28.0 395 150


Hybase® fire-side corrosion inhibitors

Property Method Hybase®   
M-12D M-13D M-14D
Magnesium, wt % ASTM D4951 11.2 12.2  13.2 14.2
Mg Sulfonate, wt % ASTM D3712 10.0 11.0 12.0 13.0
TBN, mgKOH/g ASTM D2896 505 550 595 640
Viscosity @100°C, cSt ASTM D445 15  25  50 60
Specific gravity @15°C ASTM D4052 1.150  1.190 1.230 1.250
Flash point (COC) ASTM D92 100 100 100 100
Color(dilute) ASTM D1500 3.0 3.5  3.5 4.0



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Lubricant Additives

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