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

Product #	Size	Weight	SDS
#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

Documentation

	→ PRODUCT 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

There is simply no better products

As a kart racer I can not say enough about the quality and performance helping standards of the Lucas Oil Products. We have been using Lucas Oil Products in our kart for four years now and there is simply no better products. We race all over the southeast and people are always coming up and asking what we are using and how it is performing. Thank You Lucas Oil for your support and your awesome oil products.

Tanner M., Munford, TN

I love LUCAS OIL

I have used nothing but Lucas Oil since I was younger. I've always seen improvements in every vehicle I've drove or recommended to use. The boost of mpg's is awesome. I know I'm burning cleaner. And OIL. Whoa don't get me started. Every oil change I supplement a quart. Dry starts gone. Ticking, noise, rattle, tapping........ gives in to the products. I love LUCAS OIL. I will always use it, my kids, family, and friends will too. Especially since they have me do their oil changes.

Shelby

Now the engine is “humming” like it was brand new.

Complete Engine Treatment added to engine oil eliminated squeaking from engine during ignition and now engine is "humming" like it was brand new. 2003 LEXUS RX 300 108K.

Darwin F., Honolulu, HI

Nothing other than Lucas Oil products comes through the door of this shop EVER

I own a auto repair shop in Milton Ontario Canada and i use NOTHING but Lucas Oil products in my customers vehicles as well as my own vehicles. I have saved my customers tons of gas and their vehicles run pristine with the Lucas Oil products I use in there vehicles. Nothing other than Lucas Oil products comes through the door of this shop EVER.

Darrin H., Cambridge, MT

Whether I’m chasing Trophy Game animals or chasing Trophy Fish Lucas Products are running with me

My name is Jim Klinkner the owner of Klinks Premium Wildlife Blend. I'm a firm believer in Lucas Products. I use Lucas Synthetic Outboard Marine Oil in my Bass Boat and I use Lucas oil in my ATV's. I depend on Lucas Products whether I'm chasing Trophy Game animals or chasing Trophy Fish Lucas Products are running with me. My machines seem to love Lucas Products better than the rest. Less plug fouls, less smoke the machines running better and smoother. Thanks Lucas

James K., Dairyland, WI

RELATED NEWS

READ MORE NEWS

The Strongest Brands Know Their Roots

September 16, 2026

The Strongest Brands Know Their Roots

Lucas Oil unveils enhanced Fuel Treatment line

September 15, 2026

Lucas Oil unveils enhanced Fuel Treatment line

Lucas Oil Motor Oil Extender supports engine protection amid rising costs

September 8, 2026

Lucas Oil Motor Oil Extender supports engine protection amid rising costs