Oils & Lubricants
Marine Oils & Lubricants
Marine Engine Oils, Gear Lube, Transmission Fluid & Grease
Shop marine engine oil, transmission fluid, gear oil, hydraulic fluid, grease, oil filters, oil change pumps, corrosion protection fluids, and lubrication products for engine and drive-system maintenance.
Match oil type, viscosity, specification, engine model, drive type, transmission model, and service interval before ordering fluids.
Use the oil, lubricant, and fluid specifications listed by the engine or drive manufacturer. Confirm viscosity, marine rating, capacity, filter match, and service procedure before maintenance.
Top OEM Oil & Lubricant Searches
Oil & Lubricant Subcategories
Fitment
Use the Correct Specification, Not Just the Brand
Marine oils and fluids are selected by viscosity, certification, application, and equipment requirement. Check the engine manual, drive manual, transmission plate, or existing part number before mixing or replacing fluids.
Service
Fluids Tell a Story
Milky oil, burnt smell, metal flakes, dark gear lube, low fluid level, or repeated contamination can point to leaks, water intrusion, overheating, wear, or improper service.
Record hours, date, oil type, filter part number, quantity, and observations at every oil or fluid change.
Engine Oils
Marine gasoline, diesel, 2-stroke, synthetic, and OEM-approved oils help protect engines under load.
Drive & Gear Fluids
Gear lube, lower-unit oil, transmission fluid, and hydraulic fluid protect drives, gearboxes, trim, and steering systems.
Grease & Additives
Marine grease, anti-rust agents, corrosion inhibitors, and service additives support long-term maintenance.
Maintenance
Build Oil Changes Around the Whole Service
A proper oil or fluid service includes filters, drain plugs, gaskets, pumps, absorbent pads, inspection, correct disposal, and a final leak check after running the engine.
FAQ
Oils & Lubricants Questions
What oil should I use in my marine engine?
Use the viscosity and specification listed by the engine manufacturer. Marine gasoline engines often require NMMA FC-W oil, while marine diesels and OEM engines may call for specific diesel or OEM-approved oils.
How often should boat engine oil be changed?
Follow the engine manual. Many recreational engines are serviced annually or by engine hours, whichever comes first, and more often after contamination or severe use.
Is gear oil the same as engine oil?
No. Gear oil, lower unit lube, engine oil, transmission fluid, and hydraulic fluid are different products with different specifications. Use the correct fluid for the component.
Why is my gear oil milky?
Milky gear oil usually suggests water contamination. Inspect seals, drain plugs, gaskets, and pressure-test the drive or gearcase as recommended before refilling.
Ready for Fluid Service?
Shop Marine Engine Oil, Gear Lube, Transmission Fluid, Grease & Filters
Search by engine brand, viscosity, OEM part number, oil type, fluid specification, filter part number, drive type, or maintenance task.
Filter Bracket-SS 1/4 NPT
Replacement SS Filter Head, 1/4"
Sierra / Marine Oil Filter GM Chevrolet Long Style / 47-78761
Marine Oil Filter for GM/Chevrolet Engines — Long StyleThe Sierra 47-78761 is a long-style marine oil filter for GM and Chevrolet-based marine engi...
View full detailsSierra Marine Oil Filter — GM L4, L6 & V8 Short Style (47-78242)
Marine Oil Filter for GM L4, L6 & V8 Engines — Short StyleThe Sierra 47-78242 is a short-style marine oil filter designed for GM-based L4, L6, ...
View full detailsSierra 94004 Oil-25W40 FCW I/O-I/B, 5 Qt.
Formulated to provided excellent lubrication and corrosion protection. Developed for the marine environment and outperforms automotive engine oils ...
View full detailsSierra 94007 Oil-25W40 FCW I/O-I/B, 55 Gal. Drum
Formulated to provided excellent lubrication and corrosion protection. Developed for the marine environment and outperforms automotive engine oils ...
View full detailsCRC 75102 QD® Electronic Cleaner, 312 g, 12/case
Instantly penetrates hard-to-reach areas to safely dissolve dirt and debris from sensitive electronic components. Cleans contacts, connectors and s...
View full detailsSierra 94002 Oil-25W40 FCW I/O-I/B, Qt.
Formulated to provided excellent lubrication and corrosion protection. Developed for the marine environment and outperforms automotive engine oils ...
View full detailsPanther DIY Series Oil Extractor
These compact, powerful pumps make oil changes fast, efficient and cleaner than you ever thought possible. They take less than 10 seconds to prime ...
View full detailsPanther DIY Series Oil Extractor
These compact, powerful pumps make oil changes fast, efficient and cleaner than you ever thought possible. They take less than 10 seconds to prime ...
View full detailsFluid/Oil Extractor, 7.5 Qt.
This economical, large capacity fluid extractor provides an easier, cleaner way to drain engines with hard to reach drain plugs. Ideal for most flu...
View full detailsHonda - Marine 10W-30 NMMA Oil - 08207-10W30FCW
Honda Marine 10W-30 FC-W Engine Oil is formulated for Honda marine engines and approved to meet the NMMA FC-W marine oil standard. It is tested by ...
View full detailsVolvo Penta Anti-Rust Agent 21234027
Volvo Penta 21234027 is a genuine OEM anti-rust agent / corrosion shield for marine use. Current Volvo Penta and dealer listings identify part numb...
View full detailsVolvo Penta Oil 21681796
Volvo Penta 21681796 is a genuine Volvo Penta synthetic gasoline engine oil sold in a 5-gallon (20 liter) container. Current Volvo Penta parts-shop...
View full detailsVolvo Penta Neutralizing Agent 21687793
Volvo Penta 21687793 is a genuine OEM neutralizing agent / Neutra-Salt concentrate used for flushing selected Volvo Penta marine cooling systems. V...
View full detailsMercury 2-Cycle DFI Oil 8M0230194
Mercury 8M0230194 is a genuine OEM 2-cycle DFI synthetic blend outboard oil for direct fuel injected Mercury and Mariner 2-stroke engines. Dealer l...
View full detailsVolvo Penta VDS-4.5 15W-40 Diesel Engine Oil 5 Gallon – 23219264
Volvo Penta 23219264 is a genuine OEM marine diesel engine oil identified as VDS-4.5 Engine Oil 15W-40. Public Volvo Penta and dealer listings desc...
View full detailsMercury 4-Stroke Oil 1L 8M0078637
Mercury 4-Stroke Marine Engine Oil – 1L – 8M0078637 Protect your marine engine with Mercury 4-Stroke Marine Engine Oil 8M0078637. This genuine Merc...
View full detailsMercury 4-Stroke Oil 4L 8M0078638
Mercury 4-Stroke Marine Engine Oil – 4L – 8M0078638 Protect your marine engine with Mercury 4-Stroke Marine Engine Oil 8M0078638. This genuine Merc...
View full detailsMercury 4-Stroke Oil 4L 8M0078640
Mercury 4-Stroke Marine Engine Oil – 4L – 8M0078640 Protect your marine engine with Mercury 4-Stroke Marine Engine Oil 8M0078640. This genuine Merc...
View full detailsMercury 4-Stroke Synthetic Blend Marine Oil 10W-30 1 Gallon 8M0149213
Mercury 8M0149213 is a genuine OEM 10W-30 4-stroke synthetic blend marine engine oil in a 1-gallon package. Current Mercury product information des...
View full detailsSierra 25W-40 4-Stroke Marine Engine Oil - 1 Quart
Sierra premium 25W-40 4-stroke marine engine oil engineered for superior protection and performance in marine gasoline engines. This high-quality o...
View full detailsYanmar Y-Spec Synthetic Engine Oil 50540 - 1 Quart Marine Diesel
Genuine Yanmar Y-Spec Synthetic Engine Oil - Professional Marine Lubricant OEM synthetic engine oil formulated specifically for Yanmar marine diese...
View full detailsVolvo Penta Oil 218 - OEM Marine Engine Oil
Genuine Volvo Penta marine engine oil (Part #218) formulated specifically for marine engine applications. This OEM lubricant provides superior prot...
View full detailsVolvo Penta Oil 217 - OEM Marine Engine Oil
Genuine Volvo Penta oil (Part #217) specially formulated for marine engine lubrication and protection. This OEM lubricant provides superior wear pr...
View full detailsMercury Synthetic Blend Engine Oil 10W-30 8M0149203
Mercury 8M0149203 is a genuine Mercury Marine SAE 10W-30 synthetic blend 4-stroke marine engine oil. Retail and dealer listings identify this part ...
View full detailsMercury 4-Stroke Engine Oil 1L 8M0078639
Mercury 4-Stroke Marine Engine Oil – 1L – 8M0078639 Protect your marine engine with Mercury 4-Stroke Marine Engine Oil 8M0078639. This genuine Merc...
View full detailsMercury 4-Stroke High Performance Oil Quart 8M0078013
Mercury 4-Stroke High Performance Engine Oil – Quart – 8M0078013 Protect high-output marine engines with Mercury 4-Stroke High Performance Engine O...
View full detailsVolvo Penta Diesel Engine Oil VDS-4.5 SAE 5W-40 1L 23219282
V Volvo Penta 23219282 is a genuine OEM diesel engine oil in a 4 litre container. The product label identifies it as VDS-4.5 SAE 5W-40 and API CK-4...
View full detailsVolvo Penta Engine Oil 23219274 - Premium Marine Lubricant
Genuine Volvo Penta engine oil engineered specifically for marine diesel and gasoline engines. This premium lubricant delivers superior protection ...
View full detailsMercury MerCruiser Synthetic 10W-30 Oil 1L 8M0142141
Maintain proper lubrication and engine protection with the Mercury MerCruiser Synthetic 10W-30 Oil 1L 8M0142141. This genuine Mercury Marine OEM sy...
View full detailsMercruiser 4-Stroke Synthetic Oil 4L - OEM Part 8M0078642
Mercury 8M0078642 is a genuine OEM 4-stroke synthetic blend marine engine oil in a 4-litre container. Dealer listings identify it as OIL 4S SYN4L, ...
View full detailsMercruiser 4-Stroke Synthetic Oil 1L - OEM Part 8M0078641
Genuine Mercruiser OEM 4-stroke synthetic engine oil engineered for superior protection and performance in marine applications. This premium synthe...
View full detailsMercruiser High Performance Gear Lube 8M0222063
Mercury 8M0222063 is a genuine OEM SAE 90 High Performance Gear Lube for marine gearcases. It is formulated for outboard lower units, jet pumps, sp...
View full detailsMercury Premium Plus TC-W3 2-Stroke Oil 32 oz 858026KC1
Mercury 858026KC1 is a genuine OEM Premium Plus TC-W3 2-stroke marine engine oil in a 32 oz / 1 quart / 1 liter package. Mercury's current product ...
View full detailsSynthetic 75W90 Gear Oil - Marine Transmission & Lower Unit Oil
Premium Synthetic 75W90 Gear OilHigh-performance synthetic gear oil specifically formulated for marine lower units, stern drives, and transmissions...
View full detailsSynthetic 15W40 Marine Diesel Engine Oil AMEQTC
AMEQTC is a synthetic 15W-40 heavy-duty diesel and marine engine oil designed for demanding diesel applications. AMSOIL describes this oil as suita...
View full detailsOutboard Two-Cycle Oil - Premium 2-Stroke Engine Oil
Premium Outboard Two-Cycle Engine Oil High-quality 2-stroke oil formulated specifically for outboard marine engines. This premium two-cycle oil pro...
View full detailsAMSOIL Dominator 2-Cycle Racing Oil - Quart
AMSOIL Dominator 2-Cycle Racing OilPremium synthetic 2-stroke racing oil engineered for maximum performance in high-RPM marine engines. AMSOIL Domi...
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