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.

Shop Oils & Lubricants Engine Oil Gear Oil

Fitment Check

Match oil type, viscosity, specification, engine model, drive type, transmission model, and service interval before ordering fluids.

Ask Parts Desk

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.

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Top OEM Oil & Lubricant Searches

Volvo PentaEngine oil, drive lube, coolant additives, and service fluids Mercury MerCruiserEngine oil, gear lube, DFI oil, and service fluids YanmarDiesel engine oil, transmission fluid, and filters CrusaderGas inboard oil and maintenance fluids IndmarWatersports engine oil and service supplies PCMInboard oil, filters, and lubricant support

Shop Oils by Brand

Marine Oil, Lubricant, Filter & Service Brands

Browse oil, lubricant, grease, fuel and oil filter, fluid-transfer, corrosion-protection, and service products by brand. Use the exact engine, drive, transmission, filter, or fluid specification before ordering.

AMSOILSynthetic engine oil, 2-cycle oil, diesel oil, and marine lubricant searches HondaHonda Marine oil and outboard maintenance fluid searches Mercury4-stroke oil, DFI oil, gear lube, and outboard service fluids MerCruiserSterndrive oil, gear lube, synthetic oil, and service fluid searches Volvo PentaOEM engine oil, diesel oil, anti-rust agents, and service fluids YanmarYanmar marine diesel engine oil and OEM lubricant searches SierraMarine engine oil, oil filters, fuel filters, gear lube, and service parts CRCLubricants, silicone spray, white lithium grease, cleaners, and protectants RacorFuel/water separator filters, replacement elements, bowls, and service kits SeachoiceFuel filters, oil-change tools, fluid-transfer pumps, and service accessories PantherOil extractors and fluid-service tools for cleaner oil changes Trac OutdoorsFluid extractors and oil-change support tools MoellerFuel/water separator bowls and related service parts Fairview FittingsPipe fittings and fuel or oil service connection support WSM Performance PartsFilter O-rings, maintenance parts, and engine-service support Marine LubricantsSynthetic gear oil, diesel oil, and general marine lubricant searches

Oil & Lubricant Subcategories

Engine OilFC-W, diesel, synthetic, and conventional oils 2-Stroke OilOutboard and DFI oil options Gear OilOutdrive, lower unit, and gearcase lubrication Transmission FluidMarine gearbox and hydraulic drive fluids Hydraulic FluidSteering, trim, and hydraulic system fluids Marine GreaseWater-resistant grease for fittings and hardware Oil FiltersSpin-on and cartridge oil filter replacements Oil Change PumpsManual and electric oil extraction tools Anti-Rust & AdditivesCorrosion protection and service additives

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.

10W-30 Marine Oil 15W-40 Marine Oil FC-W Oil

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.

OIL

Engine Oils

Marine gasoline, diesel, 2-stroke, synthetic, and OEM-approved oils help protect engines under load.

DRV

Drive & Gear Fluids

Gear lube, lower-unit oil, transmission fluid, and hydraulic fluid protect drives, gearboxes, trim, and steering systems.

GRS

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.

Change filtersReplace oil filters and seals when changing oil unless the service manual says otherwise.

Use clean transfer toolsKeep oil pumps, funnels, hoses, and containers clean to avoid contamination.

Check for waterMilky engine oil or gear lube can indicate water intrusion and should be investigated.

Dispose properlyUsed oil, filters, and absorbents should be handled as waste fluids according to local rules.

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.

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Volvo Penta Marine Lubricating Grease – 828250

$14.20 - $14.20

$14.20

$14.20 - $14.20

$14.20

8 in stock

Volvo Penta Marine Lubricating Grease – Part Number 828250 Brand: Volvo Penta (Genuine OEM) Part Number: 828250 Official Product Type: Marine Lubri...

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$14.20 - $14.20

$14.20

$14.20 - $14.20

$14.20

Starbrite 18532 Hydraulic Steering Fluid 32oz

Star Brite 18532 Marine Hydraulic Steering Fluid — 32 oz

$38.89 - $38.89

$38.89

$38.89 - $38.89

$38.89

Out of stock

Marine Hydraulic Steering Fluid for Top-Offs and Single-System Fills Star Brite 18532 is the same marine-grade ISO 15 hydraulic steering fluid as t...

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$38.89 - $38.89

$38.89

$38.89 - $38.89

$38.89

Sold out

Volvo Penta Diesel Engine Oil VDS-4.5 SAE 15W-40 1L 23219282

$15.50 - $15.50

$15.50

$15.50 - $15.50

$15.50

12 in stock

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 15W-40 and API CK-4,...

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$15.50 - $15.50

$15.50

$15.50 - $15.50

$15.50

AMSOIL 15W-40 Heavy-Duty Diesel & Marine Oil AME1GC | 3.78 L

$362.00 - $362.00

$362.00

$362.00 - $362.00

$362.00

Out of stock

AMSOIL 15W-40 Heavy-Duty Diesel & Marine Oil | AME1GC | 3.78 L Part Number AME1GC (retail unit: AME1GC-EA) Brand AMSOIL Official P...

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$362.00 - $362.00

$362.00

$362.00 - $362.00

$362.00

Sold out

$26.27 - $26.27

$26.27

$26.27 - $26.27

$26.27

Only 4 left!

Mercury / Quicksilver 8M0162832 – OEM FourStroke Oil FilterPart Number: Mercury / Quicksilver 8M0162832 (ref: 35-8M0162832)Brand: Mercury MarineTyp...

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$26.27 - $26.27

$26.27

$26.27 - $26.27

$26.27

Volvo Penta Transmission Oil 80W-90 GL-5 1141676 | 1 Qt Gear Lube

$27.80 - $27.80

$27.80

$27.80 - $27.80

$27.80

9 in stock

Volvo Penta Transmission Oil 80W-90 GL-5 — Part #1141676 Genuine Volvo Penta SAE 80W-90 API GL-5 petroleum gear oil for compatible older sterndrive...

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$27.80 - $27.80

$27.80

$27.80 - $27.80

$27.80

Mercury 4-Stroke Marine Engine Oil – 25W-40, 4L | Part 8M0078640

$65.47 - $65.47

$65.47

$65.47 - $65.47

$65.47

Only 4 left!

Mercury 4-Stroke Marine Engine Oil – 25W-40 | 4 Litres Part Number 8M0078640 OEM Reference 92-8M0078640 Brand Mercury Marine Offic...

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$65.47 - $65.47

$65.47

$65.47 - $65.47

$65.47

Quicksilver 4-Stroke Engine Oil – 4L | Part 8M0078634

$64.16 - $64.16

$64.16

$64.16 - $64.16

$64.16

Out of stock

Quicksilver 4-Stroke Engine Oil – 4 Litre Part Number 8M0078634 OEM Reference 92-8M0078634 Brand Quicksilver (Mercury Marine) Offi...

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$64.16 - $64.16

$64.16

$64.16 - $64.16

$64.16

Sold out

Star*Tron® Tank Cleaner, 1/2 Gal.

$71.79 - $71.79

$71.79

$71.79 - $71.79

$71.79

Item locally warehoused

Star*Tron® Tank Cleaner is a concentrated gasoline and diesel fuel tank cleaner made for tanks with extremely heavy sludge and related deposits—use...

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$71.79 - $71.79

$71.79

$71.79 - $71.79

$71.79

Gas Stabilizer 1 Gal.

$161.99 - $161.99

$161.99

$161.99 - $161.99

$161.99

Item locally warehoused

Star brite Gas Stabilizer helps protect gasoline engines and fuel systems during storage—so you can keep your equipment ready to fire when the seas...

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$161.99 - $161.99

$161.99

$161.99 - $161.99

$161.99

Gas Stabilizer 5 Gal.

$733.19 - $733.19

$733.19

$733.19 - $733.19

$733.19

Item locally warehoused

Star Brite Gas Stabilizer helps protect gasoline engines and fuel systems during storage by stabilizing fuel and helping prevent corrosion. Key Fea...

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$733.19 - $733.19

$733.19

$733.19 - $733.19

$733.19

$7,072.00 - $7,072.00

$7,072.00

$7,072.00 - $7,072.00

$7,072.00

Volvo Penta IPS Aquamatic Transmission Oil 75W-90 — 208L Drum | OEM 22479660 The Volvo Penta IPS Aquamatic Synthetic Transmission Oil 75W-90 (2247...

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$7,072.00 - $7,072.00

$7,072.00

$7,072.00 - $7,072.00

$7,072.00

Volvo Penta IPS Transmission Oil 75W-90 1L 22479650 - Special Order

$57.00 - $57.00

$57.00

$57.00 - $57.00

$57.00

Volvo Penta 22479650 is genuine OEM Synthetic Transmission Oil 75W-90 supplied in a 1 litre bottle. It is a fully synthetic marine gear oil develop...

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$57.00 - $57.00

$57.00

$57.00 - $57.00

$57.00

Volvo Penta IPS Transmission Oil 75W-90 22479647 - Special Order

$712.00 - $712.00

$712.00

$712.00 - $712.00

$712.00

Volvo Penta 22479647 is genuine OEM Synthetic Transmission Oil 75W-90 for Volvo Penta marine drive and transmission applications. It is used where ...

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$712.00 - $712.00

$712.00

$712.00 - $712.00

$712.00

Volvo Penta Grease Cartridge – 22618330

$26.00 - $26.00

$26.00

$26.00 - $26.00

$26.00

7 in stock

Volvo Penta 22618330 is a water-resistant marine grease cartridge intended for grease-gun application. Public Volvo Penta and dealer listings descr...

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$26.00 - $26.00

$26.00

$26.00 - $26.00

$26.00

Yamaha 4M 10W-30 Marine Engine Oil 1L YMR-4M10W-30-LT

$14.95 - $14.95

$14.95

$14.95 - $14.95

$14.95

Out of stock

Yamaha 4M 10W-30 marine engine oil, 1L bottle. Formulated for Yamaha 4-stroke outboard engines. Use as specified in your Yamaha engine service manu...

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$14.95 - $14.95

$14.95

$14.95 - $14.95

$14.95

Sold out

Methyl Hydrate 946ml - Marine Fuel Line Antifreeze & Gas Dryer

$14.13 - $14.13

$14.13

$14.13 - $14.13

$14.13

946.0ml | $14.94 / l

65 in stock

Premium methyl hydrate (methanol) formulated for marine fuel system maintenance and winterization. This 946ml bottle provides essential protection ...

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$14.13 - $14.13

$14.13

$14.13 - $14.13

$14.13

946.0ml | $14.94 / l

ComStar Hum-Out Diesel Fuel Biocide 16 oz

$42.45 - $42.45

$42.45

$42.45 - $42.45

$42.45

118 in stock

ComStar Hum-Out Diesel Fuel Biocide — 16 ozDiesel fuel tanks on boats are a prime environment for microbial growth. Bacteria, algae, and fungi thri...

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$42.45 - $42.45

$42.45

$42.45 - $42.45

$42.45

Mercury OptiMax DFI Synthetic Blend 2-Stroke Oil 10L 8M0230196

$198.93 - $198.93

$198.93

$198.93 - $198.93

$198.93

Only 1 left!

Mercury 8M0230196 is a genuine OEM Optimax / DFI synthetic-blend 2-cycle engine oil package for direct fuel injected 2-stroke outboards. Current Me...

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$198.93 - $198.93

$198.93

$198.93 - $198.93

$198.93

Mercury Pump & Lube 8M0222068 - Marine Grease Lubricant kit

$50.29 - $50.29

$50.29

$50.29 - $50.29

$50.29

Only 4 left!

Premium Mercury pump and lube marine grease for protecting and lubricating critical marine components. Part Number: 8M0222068 This genuine Mercur...

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$50.29 - $50.29

$50.29

$50.29 - $50.29

$50.29

Mercury High Performance Gear Lube 8M0222055 - 5 Gallon Pail

$443.85 - $443.85

$443.85

$443.85 - $443.85

$443.85

Only 5 left!

Premium Mercury High Performance gear lubricant in a convenient 5-gallon pail for marine lower unit and gear case protection. Part Number: 8M02220...

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$443.85 - $443.85

$443.85

$443.85 - $443.85

$443.85

Mercury / MerCruiser Quicksilver Engine Cleaner — 858080KC3

$12.34 - $12.34

$12.34

$12.34 - $12.34

$12.34

Only 4 left!

Mercury / MerCruiser Quicksilver Engine Cleaner — 858080KC3 The Mercury Quicksilver 858080KC3 Engine Cleaner (commonly listed as 858080K03 / 92-85...

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$12.34 - $12.34

$12.34

$12.34 - $12.34

$12.34

Mercury Quicksilver Power Steering Fluid 858078Q01

$39.33 - $39.33

$39.33

$39.33 - $39.33

$39.33

Only 5 left!

Mercury Quicksilver 858078Q01 is genuine OEM Hydraulic Helm Steering Fluid supplied in a 32 oz bottle for compatible non-power hydraulic st...

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$39.33 - $39.33

$39.33

$39.33 - $39.33

$39.33

Mercury Quicksilver SAE 0W-30 Full Synthetic Power Steering Fluid 858077K01

$41.33 - $41.33

$41.33

$41.33 - $41.33

$41.33

Only 2 left!

Mercury Quicksilver 858077K01 is genuine OEM SAE 0W-30 Full Synthetic Power Steering Fluid supplied in a 32 oz / 1-quart bottle. It is formulated f...

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$41.33 - $41.33

$41.33

$41.33 - $41.33

$41.33

Mercury Quicksilver Power Trim and Steering Fluid 858075K01

$25.59 - $25.59

$25.59

$25.59 - $25.59

$25.59

9 in stock

Mercury Quicksilver 858075K01 is genuine OEM Power Trim & Steering Fluid for compatible Mercury, Mariner, Force, and MerCruiser marine trim, ti...

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$25.59 - $25.59

$25.59

$25.59 - $25.59

$25.59

Mercury Quicksilver Power Trim and Steering Fluid 8 oz 858074K01

$21.82 - $21.82

$21.82

$21.82 - $21.82

$21.82

Only 3 left!

Mercury Quicksilver 858074K01 is genuine OEM Power Trim & Steering Fluid supplied in an 8 oz bottle for compatible Mercury, Mariner, Force, and...

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$21.82 - $21.82

$21.82

$21.82 - $21.82

$21.82

Mercury Quicksilver High Performance Gear Lube – 858058KC1

$26.53 - $26.53

$26.53

$26.53 - $26.53

$26.53

28 in stock

Mercury Quicksilver High Performance Gear Lube 858058KC1 is a marine gearcase lubricant formulated for outboard and sterndrive lower units....

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$26.53 - $26.53

$26.53

$26.53 - $26.53

$26.53

Mercury Quicksilver High Performance Gear Lube 5 Gallon 858008K01

$464.04 - $464.04

$464.04

$464.04 - $464.04

$464.04

7 in stock

Mercury Quicksilver High Performance Gear Lube 858008K01 (8M0222055) is a genuine OEM high performance gear lubricant formulated specifically for M...

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$464.04 - $464.04

$464.04

$464.04 - $464.04

$464.04

Kleen-Flo Kleen-Stor Engine Storage & Fogging Oil 340g - 789

$18.84 - $18.84

$18.84

$18.84 - $18.84

$18.84

Only 1 left!

The Kleen-Flo Kleen-Stor Engine Storage & Fogging Oil 789 is an aerosol engine storage spray designed to help protect internal engine component...

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$18.84 - $18.84

$18.84

$18.84 - $18.84

$18.84

Shell Rotella T1 SAE 40 Diesel Engine Oil 5L | 550054467

$50.62 - $50.62

$50.62

$50.62 - $50.62

$50.62

Only 2 left!

Shell Rotella T1 SAE 40 Diesel Engine Oil — 5L Part Number: 550054467 (Shell Rotella) Shell Rotella T1 SAE 40 is a straight-grade heavy-duty engine...

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$50.62 - $50.62

$50.62

$50.62 - $50.62

$50.62

Diesel Cetane Boost - Premium Fuel Additive for Marine Diesel Engines

$14.20 - $14.20

$14.20

$14.20 - $14.20

$14.20

7 in stock

Premium Diesel Cetane Booster for Marine EnginesEnhance your marine diesel engine's performance with our premium cetane booster fuel additive. Form...

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$14.20 - $14.20

$14.20

$14.20 - $14.20

$14.20

Sierra 79111 4-Cycle Outboard Oil Filter

Sierra 18-7911-1 4-Cycle Outboard Oil Filter – Yamaha, Nissan/Tohatsu & Honda

$17.19 - $17.19

$17.19

$17.19 - $17.19

$17.19

Item locally warehoused

Sierra 18-7911-1 4-Cycle Outboard Oil Filter Part Number: Sierra 18-7911-1 (SKU: 47-79111) Brand: Sierra UPC: 808282000000 The Sierra 18-7911-1 i...

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$17.19 - $17.19

$17.19

$17.19 - $17.19

$17.19

Seachoice 90199 2.3-Gallon Manual Fluid Extractor

Seachoice 2.3-Gallon Vacuum Fluid Extractor – 50-90199

$227.59 - $227.59

$227.59

$227.59 - $227.59

$227.59

Item locally warehoused

A 2.3-gallon vacuum fluid extractor with a built-in hand pump that initiates suction automatically — no compressor required. Once the vacuum is est...

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$227.59 - $227.59

$227.59

$227.59 - $227.59

$227.59

OzzyJuice® 14721 SW7 Parts/Brake Cleaning Solution, 5 Gal.

OzzyJuice SW7 Parts & Brake Cleaning Solution — 5 Gal

$456.29 - $456.29

$456.29

$456.29 - $456.29

$456.29

Item locally warehoused

Parts & Brake Cleaning Solution for SmartWasher Bioremediating Parts WashersImportant: OzzyJuice SW7 is formulated exclusively for use in Smart...

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$456.29 - $456.29

$456.29

$456.29 - $456.29

$456.29

OzzyJuice® 14148 SW4 Heavy Duty Degreasing Solution, 5 Gal.

OzzyJuice SW4 Heavy-Duty Degreasing Solution — 5 Gal

$321.29 - $321.29

$321.29

$321.29 - $321.29

$321.29

Item locally warehoused

Heavy-Duty Bioremediating Degreaser for SmartWasher Parts WashersImportant: OzzyJuice SW4 is formulated exclusively for use in SmartWasher® Bioreme...

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$321.29 - $321.29

$321.29

$321.29 - $321.29

$321.29

Quicksilver SAE90 High Performance Gear Lube – 55 Gallon Drum (92-8M0222058)

$4,638.64 - $4,638.64

$4,638.64

$4,638.64 - $4,638.64

$4,638.64

Item locally warehoused

Quicksilver SAE90 High Performance Gear Lube – 55 Gallon DrumEngineered specifically for marine lower units and stern drives, Quicksilver SAE90 Hig...

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$4,638.64 - $4,638.64

$4,638.64

$4,638.64 - $4,638.64

$4,638.64

Quicksilver 37299Q2 Pistol Grip Grease Gun – Fits 8 oz Tubes

$45.46 - $45.46

$45.46

$45.46 - $45.46

$45.46

Item locally warehoused

Quicksilver 37299Q2 Pistol Grip Grease Gun – Fits 8 oz Tubes Keep your outboard and sterndrive components properly lubricated with the Quicksilver...

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$45.46 - $45.46

$45.46

$45.46 - $45.46

$45.46

Quicksilver 74057Q5 2-4-C Marine Grease Gun Kit – Pistol Grip with 3 oz Cartridge

$69.07 - $69.07

$69.07

$69.07 - $69.07

$69.07

Item locally warehoused

Quicksilver 74057Q5 2-4-C Marine Grease Gun Kit – Pistol Grip with 3 oz Cartridge Everything you need to grease your outboard or sterndrive in one...

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$69.07 - $69.07

$69.07

$69.07 - $69.07

$69.07