MOTOR OIL

4-Stroke Marine Engine Oil SAE 25W-40

Lucas 4-Stroke Marine Engine Oil SAE 25W-40 is designed to improve wear protection and increase catalyst life in newer inboards using catalytic converters. Meets or exceeds NMMA® FC-W (CAT) performance.

Can be used in automotive applications where API SM oils are called out for. Also has applications in 4-stroke outboards and 4-stroke personal watercraft. Lucas 4-Stroke Marine Engine Oil SAE 25W-40 is fortified with special synthetic additives that coat all moving parts to guard against rust, corrosion and moisture during long storage periods. Meets or exceeds MERCRUISER® sterndrive and inboard marine performance requirements.

Key Benefits

Designed to improve wear protection
Increase catalyst life in newer inboards using catalytic converters
Fortified with special synthetic additives that coat moving parts

Packaging

#10677	1 Quart (Case of 6)	13 lbs
#10814	5 Quarts (Case of 3)	30 lbs
#10694	55 Gallon Drum (Made to Order)	440 lbs

Download Product Files

	Product Data Sheet
	Safety Data Sheet
	Zinc Values

MEDIA

360 VIEW

view the 360

360 VIEW

view the 360

PRODUCT VIEW

4 Stroke Marine Engine Oil 25W-40

PRODUCT VIEW

4 Stroke Marine Engine Oil 25W-40 - Quart

PRODUCT LABEL

4 Stroke Marine Engine Oil 25W-40 - Quart (Label)

PRODUCT VIEW

4 Stroke Marine Engine Oil 25W-40 - 5 Quart

PRODUCT LABEL

4 Stroke Marine Engine Oil 25W-40 - 5 Quart (Label)

PRODUCT FLYER

4 Stroke Marine Engine Oil 25W-40 Flyer

HEAR IT FROM OUR CUSTOMERS

I would recommend Lucas products to anyone with a diesel…

I have been using Lucas products in my 2001 Ford diesel since new with much success, it has over 250000 miles and going strong. I would recommend Lucas products to anyone with a diesel.

Charles W., McCormick, SC

In 2 days my steering is back to normal. Honest.

My '06 Ford Freestar was gradually getting harder to steer. No leaks and a tight belt so no slipping. I emptied as much fluid as I could and added a bottle of Lucas Power Steering Fluid and Conditioner which the bottle says eliminates hard spots.. in 2 days my steering is back to normal. Honest. It worked for me and its been 3 wks now. A garage near me gave me a price of $569.00 for a new rack installed. I lucked out. For $10.00 a bottle it was worth a try. I'm very happy.

Frank D., Waterford, NY

I Added The Lucas Oil Stabilizer and There Was an Immediate Result.

I have always had a loud top end on my Harley Sportster. And ever since I started using this oil [Lucas 20w50 Motorcycle Oil], my engine is quieter and have noticed much better my motorcycle is running overall. I added the Lucas oil stabilizer yesterday and there was an immediate result. I LOVE Lucas products and as a motorcycle mechanic for Harley Davidson, I tell everyone I know with Harley’s to use this oil. -

Megan S., Orlando, FL

I would rate them a 10 out of 10

I use Lucas lubricants in all my equipment from diesel, gas and 2 cycle. I have never had any issues and my equipment runs and starts lime day one. Lucas is a great product and I would rate them a 10 out of 10 for a quality of product.

When we got out of the car we noticed right away that almost all of the noise was gone!

My son's 2005 VW GTI with the 4 cylinder turbo and 127K miles on it sounded like there hammers inside the engine. The car was close to needing a oil change so I bought a quart of High Mileage Oil Stabilizer. He changed the oil adding the stabilizer started it up and we took it for about a 8 mile drive. When we got out of the car we noticed right away that almost all of the noise was gone! He has a 200 mile drive back to school in a few days and I'm willing to bet all of the noise will be gone by the time he gets back to campus. Thank you for a great product!

David M., Lago Vista, TX

RELATED NEWS

READ MORE NEWS

Tickets On Sale Now for the 70th Annual Lucas Oil 500 Festival Parade

March 10, 2026

Tickets On Sale Now for the 70th Annual Lucas Oil 500 Festival Parade

Governor Mike Braun Appoints Lucas Oil President Katie Lucas to Indiana Destination Development Corporation Board

March 2, 2026

Governor Mike Braun Appoints Lucas Oil President Katie Lucas to Indiana Destination Development Corporation Board

Lucas Oil Named Title Partner of 500 Festival Parade

February 5, 2026

Lucas Oil Named Title Partner of 500 Festival Parade