MOTOR OIL

Outboard Engine Oil Synthetic SAE 10W-40
HOME / PRODUCTS / MOTOR OIL / Outboard Engine Oil Synthetic SAE 10W-40

Outboard Engine Oil Synthetic SAE 10W-40

Lucas Synthetic SAE 10W-40 Outboard Engine Oil is formulated especially for the harsh conditions of high speed watercrafts. These outboard engine oils are catalyst compatible and designed for 4-Stroke applications but also work well in Inboards and Personal Water Crafts.

Long lasting and safely blends with synthetic & non-synthetic oils, Lucas outboard engine oils are fortified with a special blend of synthetic additives that coat all moving parts to guard against rust and moisture during long periods of storage.

Key Benefits

  • Excellent for use with supercharged, turbo charged or nitrous oxide high performance engines
  • Protects against rust and moisture during long periods of storage
  • Safely blends and is compatible with synthetic and non-synthetic oils
  • Provides rust and corrosion protection in both fresh water and salt water environments
  • Effective Water Resistance
  • Long Lasting
  • Resist Extreme Pressure
  • Extreme Friction Reducer
  • Contains a special additive package to improve wear protection and increase catalyst life in newer outboards using catalytic converters
  • NMMA® Certified to meet or exceed FC-W (CAT) performance
  • Meets JASO MA standards for air-cooled motorcycles and all-terrain vehicles
  • Meets industry standard API SM (automotive)
 

Packaging

#10662 1 Quart (Case of 6) 13 lbs
#10813 5 Quarts (Case of 3) 30 lbs
 

HEAR IT FROM OUR CUSTOMERS

AMAZING PRODUCT!

My family has used Lucas oil additive for years, from our vehicles to our semis. After hearing several opinions from others, as well as my own family, my boyfriend decided to give it a try. He is a die hard Lucas believer now! Earlier today he had an issue of his oil filter failing on his truck and causing most of the engine oil to spill out. We went essentially a mile before the oil pressure gauge started to drop & he coasted it onto the side of the road. The oil that was under the truck was a tackier feeling than before when he didn’t add the Lucas Oil Additive. While we sat on the side of the road he exclaimed “Lucas has my business forever. Their oil additive just saved my truck!
Savannah C.

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

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

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

It helped my 2003 Mazda MPV van perform better.

Came to your site and found out about Complete Engine Treatment, so I got some of that too!! It helped my 2003 Mazda MPV van perform better. Thanks much.
Ed G.

RELATED NEWS

Lucas Oil Celebrates New Lucas Family Brain and Spine Hospital at Ascension St. Vincent, Continues Raising Funds for Hoosier Care

August 21, 2025

Lucas Oil Celebrates New Lucas Family Brain and Spine Hospital at Ascension St. Vincent, Continues Raising Funds for Hoosier Care
Colts announce Lucas Oil as Official Global Partner 

August 6, 2025

Colts announce Lucas Oil as Official Global Partner 
Lucas Oil Leaders Morgan & Katie Lucas Named Among Indiana’s 250 Most Influential Leaders

July 25, 2025

Lucas Oil Leaders Morgan & Katie Lucas Named Among Indiana’s 250 Most Influential Leaders
solid-white-shield