TBN Booster Lubricant Additive
TBN boosters, also known as Total Base Number boosters, are basically high-alkaline detergents.
The Total Base Number (TBN) booster is an lubricating oil additives, especially engine oils, to bump up their alkalinity reserve or total base number. TBN is a measure of how much alkalinity an oil has in reserve. It shows how well the oil can neutralize acids that come from combustion or other contaminants in the engine.
TBN promoters usually have alkaline compounds, like:
Calcium salts: Calcium compounds like calcium carbonate or calcium sulfonate are often used as TBN boosters. They react with acidic compounds to neutralize them and stop them from corroding engine parts.
Magnesium compounds: Magnesium-based additives, like magnesium oxide or magnesium hydroxide, also help raise the TBN. Like calcium, they neutralize acidic stuff in the oil.
Barium compounds: Barium-based additives, like barium sulfonate, can be used as TBN boosters too. But they’re not as common as calcium and magnesium ones because of environmental and regulatory issues.
TBN boosters are super important for keeping the alkalinity reserve of lubricating oils, especially in high-performance engines that run in tough conditions where acids can build up fast. By topping up the TBN, these additives help the oil last longer, prevent acid corrosion, and keep the engine clean and running well. The exact recipe and concentration of TBN boosters depend on what the engine needs and how it’s being used.
Technology Participation Comparison
| Product Name |
TBN Range (mg KOH/g) |
Metal Type |
Metal Content (%) |
Sulfur Content (%) |
Application Field |
Recommended Dosage |
Unique Properties |
| Calcium Alkylbenzenesulfonate |
300-315 |
Calcium |
11.5-12.5% |
1.3-1.8% |
Engine oil, Marine engine oil |
1.5%-3.0% (for regular engine oil)
3.0%-25.0% (for marine oil) |
Strong acid neutralization ability, good cleanliness, rust prevention, excellent oil solubility |
| HA106A Calcium Alkylbenzenesulfonate (TBN400) |
395-415 |
Calcium |
15.0-16.0% |
1.2-1.8% |
High TBN required lubricants (e.g., marine oil) |
3.0%-30.0%
（3.0%-5.0% @S≤3.5% fuel
5.0%-30.0% @S＞3.5% fuel） |
Extreme TBN reserve, 20% higher acid neutralization efficiency than TBN300 type |
| Magnesium Alkylbenzenesulfonate |
395-420 |
Magnesium |
8.5-10.0% |
1.8-2.4% |
Turbocharged direct injection gasoline engine oil, hybrid oil, heavy-duty diesel engine oil, marine oil |
0.5%-3.0% (adjust according to specific application) |
High TBN, low ash content (compliant with SAPS standards), LSPI inhibition, excellent thermal stability, good compatibility with ZDDP |
| Calcium Sulfonate |
≥245 |
Calcium |
≥9.0% |
2.9-3.8% |
Internal combustion engine oil, marine cylinder oil (with high cleanliness requirement) |
0.5%-15.0% |
High-temperature cleanliness, acid neutralization ability, antioxidant/anti-wear properties, high soap content, excellent alkalinity retention |
Application And Recommended Dosage
| Application Scenario |
Recommended Product |
Core Parameter Advantage |
Recommended Dosage |
|---|
| Marine engine oil for high sulfur fuel in ocean-going vessels |
HA106A (TBN400) |
TBN 395-415, calcium-based high efficiency in neutralizing the acidic corrosion of fuels with sulfur content > 3.5% |
5.0%-30.0% |
| Hybrid/Electric vehicle transmission oil |
Magnesium Alkylbenzenesulfonate |
Magnesium-based low ash content (ash ≤ 0.8%), compatible with electrical systems, inhibits LSPI |
0.5%-1.5% |
| Heavy-duty diesel engine oil |
Calcium Sulfonate |
High soap content (≥9.0% Ca) provides long-lasting alkaline reserve, high-temperature cleanliness reduces piston deposits |
3.0%-10.0% |
| Turbocharged gasoline engine oil |
Magnesium Alkylbenzenesulfonate |
TBN 395-420 + synergistic effect with ZDDP, addresses low-speed pre-ignition (LSPI) |
1.2%-2.8% |
| Conventional marine oil for low sulfur fuel |
Calcium Alkylbenzenesulfonate |
TBN 300-315 cost-effective formulation, balances acid neutralization and cost |
1.5%-3.0% |
| Extreme high-temperature industrial gear oil |
Calcium Sulfonate |
3.8% sulfur content enhances anti-wear properties, applicable temperature range -20°C to 220°C |
8.0%-15.0% |
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