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
#10526 55 Gallon Drum (Made to Order) 440 lbs
 

HEAR IT FROM OUR CUSTOMERS

It was like riding a completely different bike.

I have a 2008 Harley Dyna Street Bob which has been completely customized to include engine work, custom exhaust and multiple dyno tuned sessions. The motor has 31k miles on it. The engine has always run extremely hot and destroys any oil thats in it in less than 2000 miles. This past weekend, I decided to switch over and try Lucas Oil and added 6 oz of Motorcycle Oil Stabilizer to the fresh oil. The bike is extremely quieter now (always had a sewing machine noise) and runs significantly cooler. It was like riding a completely different bike. I am sold. This stuff rocks.
Daniel F.

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.

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

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

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

RELATED NEWS

Lucas Oil Named Title Partner of 500 Festival Parade

February 5, 2026

Lucas Oil Named Title Partner of 500 Festival Parade
Lucas Oil Founder Forrest Lucas Honored Posthumously with Indiana’s Most Prestigious Sachem Award

January 8, 2026

Lucas Oil Founder Forrest Lucas Honored Posthumously with Indiana’s Most Prestigious Sachem Award
Lucas Oil President Katie Lucas Named Indiana Business Journal C-Suite Award Honoree

December 2, 2025

Lucas Oil President Katie Lucas Named Indiana Business Journal C-Suite Award Honoree
solid-white-shield