Premium heavy-duty formulations engineered to withstand salt-fog corrosion, high humidity, and extreme engine thermal cycles.
Specifically developed for high-load agricultural tractors and marine coastal fleets operating under Dominica's humid tropical weather.
Offers superior piston deposit control and soot handling capabilities for heavy-duty logistics trucks traversing steep volcanic terrains.
Designed for modern EGR/DPF engines, optimizing fuel economy and protecting exhaust treatment systems from degradation.
Ultimate synthetic formula providing exceptional thermal-oxidative stability and low-temperature fluidities for high-tier generators.
Dominica—famously celebrated as the Caribbean's "Nature Island"—presents unique geographical and atmospheric challenges for heavy industrial equipment. The island's core economic drivers, including coastal maritime transport, agricultural operations, eco-tourism transit networks, and municipal diesel-powered grids, operate under constant exposure to high relative humidity, airborne saline mist, and rapid ambient thermal changes.
These severe conditions trigger accelerated lubricant oxidation, viscosity degradation, and micro-abrasive wear in conventional motor oils. Offshore cargo ships and local fishing fleets face constant threat from water-contamination emulsion, while heavy earthmoving machinery used in volcanic infrastructure reinforcement requires extreme-pressure additives to prevent structural gear wear. As a result, commercial fleets and industrial procurement officers in Roseau and Portsmouth demand high-tier diesel engine oils that exceed API (American Petroleum Institute) requirements to guarantee engine reliability and control maintenance costs.
Shandong Longhai Lubrication Technology Development Co., Ltd. fills this gap by exporting highly tailored lubricants that prevent sludge buildup and neutralizing corrosive acids, ensuring Dominica’s infrastructure continues to run reliably.
A global leader in high-tier lubrication technology, blending innovation with industrial reliability since 2009.
Shandong Longhai Lubrication Technology Development Co., Ltd. was established in 2009 and is headquartered in Zibo, Shandong. It is a high-tech enterprise integrating R&D, production and sales. The company has been deeply involved in the lubricant industry for more than 15 years, has built a complete industrial chain system, and is committed to providing high-quality lubrication solutions for the global industrial and transportation fields.
As a reliable lubricant manufacturer in the industry, Longhai Technology owns its own brand "Century Longhai" and the international strategic cooperation brand British "A Ba" series of products. The products cover diesel engine oil, gasoline engine oil, gear oil, hydraulic transmission oil, anti-wear hydraulic oil, special engine oil for engineering machinery, special oil for natural gas, full synthetic oil, automotive urea solution, antifreeze, special engine oil for motorcycles, industrial oil, automatic transmission oil and many other lubricant varieties. The brand is insured by PICC China People's Insurance Company and quality insurance.
Our ISO-certified blending processes and high-tech formulations meet the most stringent global standards.
Longhai Technology has always insisted on innovation-driven development. Its annual R&D investment accounts for more than 5% of its annual revenue. It has established strategic cooperation with many universities and scientific research institutions to continuously optimize lubrication technology and promote industry progress. At present, the company's production base covers an area of 131 acres, with an annual production capacity of 200,000 tons. It is equipped with intelligent production lines and precision laboratories to meet the customized needs of different customers.
The company has advanced blending and fully automatic production and filling equipment. The filling production line adopts the principle of metering filling, which is suitable for filling various lubricating oils and ensures the filling accuracy of 1‰-2‰. While ensuring the filling accuracy, it increases the filling speed by 20%-35%, effectively increases the work efficiency, and realizes the standardized production of the enterprise. It guarantees the delivery speed and quality of our company to a great extent.
In terms of market layout, Longhai Technology has built a sales network covering the whole country. Its products are sold well in 139 cities in 29 provinces, autonomous regions, municipalities and special administrative regions, and are exported to overseas markets, winning the trust of many leading companies in the industry.
Customized formulation, brand development, and flexible logistics tailored to Caribbean trade standards.
Fully synthetic and semi-synthetic lubricant formulations tailored to vehicle/equipment requirements, climatic conditions or market positioning to meet international standards such as API/ACEA.
Supports small-scale trial production to large-scale production, covering engine oil, transmission oil, industrial lubricants and other full categories, filling specifications are flexible and optional.
Certified by ISO 9001, IATF 16949, etc., provide authoritative third-party test reports to ensure product performance and compliance.
We offer packaging design, label printing and technical documentation support to help you build a premium brand image.
A transparent, high-efficiency workflow ensuring seamless transactions from initial query to final Dominican delivery.
Demand Analysis
Formula Development
Sample Testing
Production Delivery
After-Sales Support
A comprehensive research-based insight into lubrication kinetics under Caribbean atmospheric and mechanical forces.
In high relative humidity zones like Roseau, diesel generator crankcases are highly prone to condensation contamination. Standard mineral oils allow moisture molecules to react with combustion by-products, forming sulfurous acids and low-temperature sludge. Shandong Longhai's formulated CJ-4 and CK-4 synthetic engine oils leverage Group III and Group IV base fluids featuring high Viscosity Index (VI) stability. This chemical matrix prevents thin-film shearing even under high temperatures while preserving high dispersant retention capacity to isolate and transport soot to filtration systems.
Driving heavy cargo trucks from Portsmouth across the steep mountains of Dominica puts immense stress on drivetrains. A low-shear lubricant leads to boundary lubrication, accelerating component wear. Our 15W-40 and 20W-50 heavy-duty formulations combine high-performance polymeric viscosity modifiers with high-solubility zinc dialkyldithiophosphate (ZDDP) anti-wear agents. This provides optimal hydrodynamic film thickness under high mechanical stress, preventing direct metal-to-metal contact on cylinder walls.
As Dominica commits to eco-tourism and low-emission regulations, protecting modern engine aftertreatment systems like diesel particulate filters (DPFs) and diesel oxidation catalysts (DOCs) is critical. High levels of sulfated ash, phosphorus, and sulfur (SAPS) can poison catalyst active sites. Shandong Longhai's low-SAPS synthetic oils extend DPF operating life and prevent backpressure elevation, supporting Dominica's transition toward clean energy.
Expert answers on importing, testing, and applying Shandong Longhai lubricants in Dominica.
Engineered to optimize performance across light passenger, heavy commercial, and complex industrial systems in Dominica.
Fully synthetic oil delivering elite shear stability and low volatility under severe tropical environments.
Delivers exceptional deposit control and wear protection for passenger vehicles and delivery fleets.
Formulated to resist heavy friction and oxidation in heavy-duty industrial worm gearbox drives.
Advanced formula protecting against high-temperature deposit formation in modern turbocharged engines.
Top-tier fuel efficiency and advanced LSPI protection for Direct Injection gasoline engines.
Protects gears under high loads and shock conditions in marine and agricultural gearboxes.
Prevents pump cavitation and wear in high-pressure heavy construction machinery hydraulics.
Excellent clutch frictional performance and engine cleanliness for local island motorcycle fleets.
Longhai