Engine Room Parts
Oils, Lubricants & Chemicals
OEM-approved engine oils, hydraulic fluids, and marine lubricants for optimal system performance
Request QuotePremium Fluid Systems for Marine Engines
Engine oils, hydraulic fluids, gear oils, and coolants are the lifeblood of marine systems. Mercer Yachting sources OEM-approved lubricants and fluids meeting marine engine specifications, ensuring compliance with manufacturer warranties and environmental regulations. We stock engine oils for main and auxiliary diesel engines, hydraulic fluids for deck machinery and steering systems, gear oils for transmissions, and specialty coolants and greases. Each product is validated for marine service on superyachts, cruise ships, and commercial vessels.
What We Supply
Engine Oils
OEM-specification diesel engine oils (Shell, ExxonMobil, Chevron) meeting ISO VG grades and SAE viscosity classes
Hydraulic Fluids
ISO VG 32, 46, 68 hydraulic fluids for deck machinery, steering, and thruster systems
Gear Oils
Transmission and gearbox oils meeting ISO VG and EP (extreme pressure) specifications
Coolants & Antifreeze
Engine coolant, fresh water system additives, and freeze protection fluids
Greases
Marine-grade multipurpose greases for bearings, winches, and general lubrication
Specialty Fluids
Biodegradable oils, turbine oils, compressor oils, and brake fluids
Additives & Treatments
Oil treatments, fuel additives, and system cleaners for extended maintenance intervals
Bulk Oil Delivery
Supply and logistics for large-volume oil deliveries at marine ports
How to Specify
Provide These Details
- OEM approvals required (Shell Marine, Mobil Marine, Chevron, etc.)
- Viscosity grade (ISO VG, SAE grade) and performance classification
- Service environment (fuel consumption, temperature range, duty cycle)
- Quantity required and bulk/drum/quart delivery preference
- Base stock preference (mineral, synthetic, biodegradable)
- Special certifications (MARPOL, HLP, HVLP, anti-wear, EP)
Common RFQs We Handle
Shell Tellus S2 VX 46 Hydraulic
Marine-approved hydraulic fluid for deck machinery and control systems
Mobil Delvac 1300 Super Engine Oil
Heavy-duty diesel engine oil for slow-speed marine engines
Fresh Water Coolant 50/50
Engine coolant concentrate with corrosion inhibitors for jacket water systems
Gear Oil SAE 80W-90 EP
Transmission oil for main propulsion gearbox
Marine Grease NLGI Grade 2
General-purpose bearing and lubrication grease
Biodegradable Hydraulic Oil
Environmentally safe hydraulic fluid for sensitive operations
Fuel Treatment Biocide
Microbial contamination control additive for fuel tanks
Turbine Oil ISO VG 32
Gas turbine compressor oil for auxiliary power systems
Oil Change Service Kit
Complete kit with oil, filters, and disposal containment
Anti-Corrosion Engine Treatment
Additive package for extended oil drain intervals
Grease Cartridge Multi-Purpose
250ml grease cartridge for pneumatic grease guns
Hydraulic Fluid HLP ISO 46
Zinc-based anti-wear hydraulic oil for high-pressure systems
Engine Break-In Oil
Special formulation for new engine run-in and overhauls
Coolant Flush Concentrate
System cleaner for heat exchanger maintenance
Bulk Oil Supply Contract
Annual fuel and lubricant supply agreements for fleet operations
Frequently Asked Questions
What does ISO VG viscosity mean?
ISO VG (Viscosity Grade) indicates kinematic viscosity at 40°C. ISO VG 46 means 46 cSt at 40°C. Lower numbers (VG 32) are thinner, higher numbers (VG 68) are thicker. Select based on OEM recommendations and operating temperature range.
Can I mix different brands of engine oil?
Mixing brands isn't recommended as different additives can interact unpredictably. If you must mix, ensure both oils meet the same OEM specification (Shell Marine, Mobil Marine, etc.). Perform an oil analysis to monitor for compatibility issues.
How often should engine oil be changed on a vessel?
Intervals depend on engine type, fuel quality, and operation. Most diesel vessels change oil every 250-500 operating hours or annually. High-soot fuel (heavy fuel oil) may require more frequent changes. Oil analysis can optimize drain intervals and reduce waste.
What is the difference between mineral and synthetic oil?
Mineral oils are refined from crude petroleum; synthetics are chemically engineered. Synthetics offer better viscosity stability, longer drain intervals, and higher thermal performance but cost more. Ensure OEM approval before switching to synthetic.
Are biodegradable hydraulic fluids marine-approved?
Yes, vegetable-based and synthetic biodegradable fluids are ISO 15380 rated and meet marine environmental standards. They reduce ocean contamination risk from spills and are mandatory in some jurisdictions. Confirm equipment compatibility before use.
What is the purpose of fuel additives?
Fuel additives prevent microbial growth (biocides), inhibit corrosion, improve lubricity, and remove water contamination. Annual fuel treatment prevents tank sludge and filter plugging, reducing maintenance costs and extending fuel storage life.
How do I select the correct gear oil for my transmission?
Consult OEM documentation for the required SAE grade (80W-90, 90, etc.) and API service level. Marine gearboxes often require EP (extreme pressure) oils with anti-scuff additives. Always confirm viscosity and additive compatibility with the manufacturer.
What is MARPOL compliance for marine fluids?
MARPOL is an IMO regulation requiring marine vessels to use only biodegradable or approved synthetic fluids in certain applications to minimize ocean pollution. Check your vessel's flag and operating region for specific compliance requirements.
Delivery Footprint
Mercer Yachting delivers across the Mediterranean — Malta, Antibes, Palma de Mallorca, Barcelona, Genoa, Athens, Split — and worldwide via our global logistics network. Emergency parts dispatched same-day from our Malta hub.
Ready to Order Marine Fluids?
Our supplies specialists can source OEM-approved engine oils, hydraulic fluids, and lubricants for any vessel. Contact us with your engine model, system specifications, and volume requirements for a competitive quote.