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Home› Products› Lubricant Additives› Detergent
Lubricant Additives

Detergent

Metallic detergents neutralize acidic combustion by-products and prevent high-temperature deposits on pistons and ring grooves, the foundation of engine oil cleanliness and TBN reserve.

Engine OilMarine OilTBN ReserveCalcium SulfonatePhenateSalicylate
Chemistries
Sulfonate, Phenate, Salicylate
Key Parameter
TBN (mgKOH/g)
Metal Type
Calcium / Magnesium
Applications
Engine Oils, Marine Oils

Overview

Metallic detergents are organometallic compounds that serve two primary functions: neutralizing acidic by-products of combustion and oxidation (TBN reserve), and keeping metal surfaces free of high-temperature deposits. They are essential components of engine oil additive packages across automotive, heavy-duty diesel, marine, and industrial applications. Three main detergent chemistries are available, sulfonates, phenates, and salicylates, each offered across a range of overbasing levels to suit different TBN and deposit control requirements.

Sulfonate Detergents

Synthetic calcium sulfonates provide excellent detergency, anti-rust, and acid neutralization. Available from low-overbased (neutral) grades for rust inhibition through ultra-high overbased grades for marine cylinder oil and metalworking fluid applications.

ChemistryTBN (mgKOH/g)Ca %
Low Overbased Synthetic Calcium Sulfonate≤101.5–3.0
Low Based Synthetic Calcium Sulfonate20–35≥2.0
Medium Based Synthetic Calcium Sulfonate≥145≥6.5
Overbased Synthetic Calcium Sulfonate≥295≥11.5
Super Overbased Synthetic Calcium Sulfonate≥395≥14.5
Ultra-high Overbased Synthetic Calcium Sulfonate395–41514.5–16.0
Super Overbased Synthetic Magnesium Sulfonate395–430Mg: 8.5–10.0

Phenate Detergents

Sulfurized calcium alkyl phenates combine high-temperature detergency with antioxidant and anticorrosion properties, making them particularly effective for piston cleanliness in gasoline and diesel engine oils.

ChemistryTBN (mgKOH/g)Ca %
Medium Based Sulfurized Calcium Alkyl Phenate150–1705.2–6.0
Overbased Sulfurized Calcium Alkyl Phenate240–2858.9–10.5
Super Overbased Sulfurized Calcium Alkyl Phenate295–31510.5–12.0

Salicylate Detergents

Calcium alkyl salicylates offer excellent hydrolytic stability and high-temperature detergency with low sulfur content, making them well-suited for modern low-emission engine oil formulations.

ChemistryTBN (mgKOH/g)Ca %
Medium Based Calcium Alkyl Salicylate≥160≥5.8
High Based Calcium Alkyl Salicylate≥265≥9.5
Super Overbased Calcium Alkyl Salicylate≥340≥12.0

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Dispersant →ZDDP →High-temp Anti-oxidant →