Knowledge
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25
May-2026
Why PMA Is the Additive of Choice for Low-Temperature Hydraulic FluidsPMA (Polymethacrylate) is a high molecular weight polymer that functions as a pour point depressant in lubricating oils. It is an ideal choice for low-temperature hydraulic oils and viscosity index im
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18
May-2026
What’s the difference between API GL-4 and GL-5 gear oil?API GL-4 and GL-5 gear oil is used for different loading applications to improve gear life and reduce friction. Chorus can provide you with vehicle and industrial gear oil additives packages.
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12
May-2026
Advantages of Synthetic Ester based High-Temperature Chain OilsEsters used in high-temperature chain oils include trimellitates and polyol esters. They are characterized by high flash points, excellent resistance to carbon deposit and coking, and superior thermal
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28
Apr-2026
How to choose the Viscosity Modifier for your lubricant formulation?In modern lubricant formulation, Viscosity Modifier is the key technology that enables multigrade oils to work "in all seasons and climates." So, what are the common types of viscosity modifiers on th
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23
Apr-2026
Sulfurized Isobutylene 101: Things You Should KnowWhy do some sulfurized isobutylene (SIB) additives have a strong odor while others don't? Is it safe? Key facts about this standard EP additive in gear lubricants.
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21
Apr-2026
Long-Term Rust Preventive Oil: Effective Protection for Metals in Marine Ship...Rust preventive oil is crucial for protecting metal cargo during shipping in high-humidity, high-salt marine environments.
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15
Apr-2026
BTA vs TTA: Which is the Better Corrosion Inhibitor for Copper and Copper All...The long-term contact between copper & copper alloys and coolant easily corrodes the metal surface. Adding the excellent copper corrosion inhibitor TTA can reduce corrosion and loss, prolonging equipm
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08
Apr-2026
HFC hydraulic fluid:A Deep Dive into Composition and CostWhat are the components of HFC hydraulic fluid? Why is Polyalkylene Glycol(PAG)thickener a key indicator affecting the performance of HFC flame-retardant hydraulic oil?
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08
Apr-2026
Why sulfur-content EP antiwear additive is widely used for lubricant oil?Why do the sulfur carrier additives outperform in heavy load lubrication? The basic mechanism and advantages of sulfurized EP antiwear additive in lubircation and metalworking fluids.
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09
Mar-2026
PMA viscosity index improvers in gear oilThe viscosity index improvers used in gear oil should consider the low temperature performance and high temperature shear stability. How to choose VIIs? Follow Chorus, you’ll get professional solution
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21
Feb-2026
5 core advantages of PAG high-temperature chain oilPAG base fluids have adjustable water solubility or insolubility and are the only water-soluble lubricant additives. Their high oxygen content gives them excellent cleaning properties, making them su
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12
Feb-2026
Simple guidance of car antifreeze: Selection of Anti-freezing AdditivesLong life and high anti-corrosion make the antifreeze widely used in vehicle engines. But choosing a suitable antifreeze additive is a core element of anti-freezing.
