GEAR OIL

M8 Synthetic SAE 75W-90 Marine Gear Oil

Marine Gear Oil Synthetic SAE 75W-90 M8

Lucas M8 Synthetic SAE 75W-90 Marine Gear Oil is a pure synthetic, non foaming, super slick, long lasting lubricant designed especially for marine applications. Originally designed for high powered off shore racing boats, M8 Marine Gear Oil contains seal conditioners and an exclusive blend of synthetic additives that protect from rust and wear caused by both fresh water and salt water during long periods of storage.

Excellent for use in any heavy duty / high performance stern drives, v-drives, gear boxes, wheel bearings and superchargers.

Key Benefits

Fortified with anti-foaming agents to prevent cavitation at high RPM's
Safely blends with all other known gear oils and additives
Protects against rust and moisture during long periods of storage
Provides rust and corrosion protection in both fresh water and salt water environments
Effective Water Resistance
Long Lasting
Resist Extreme Pressure
Extreme Friction Reducer

Packaging

Product #	Size	Weight	SDS
#10652	1 Quart (Case of 6)	13 lbs
#10664	5 gallon pail	40 lbs

Download Product Files

Documentation

→ PRODUCT DATA SHEET

MEDIA

360 VIEW

view the 360

PRODUCT VIEW

Marine Gear Oil Synthetic SAE 75W-90 M8 quart

PRODUCT LABEL

Marine Gear Oil Synthetic SAE 75W-90 M8 label

PRODUCT FLYER

Marine Gear Oil SAE 80W-90, Synthetic SAE 75W-90 M8 flyer

HEAR IT FROM OUR CUSTOMERS

Lucas is SERIOUS about what they sell.

After checking my Power Steering Fluid on my Kia Spectra, I noticed the level was low. Bought the Kia new and its now 4 years old. I decided to drain the rest of the power steering fluid and replace with Lucas Power Steering Fluid purchased at Auto Zone. What a noticeable difference in steering! Price was a few dollars higher and I would spend a few more knowing Lucas is SERIOUS about what they sell. 100% would recommend Lucas Power Steering Fluid.

Gene Zeier Jr., Richmond, 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

I’ve been using Lucas Products for my vehicles for many, many years now with complete satisfaction.

I've been using Lucas Products for my vehicles for many, many years now with complete satisfaction. I came upon their gun oil many years back while at my local auto parts place while still living in California. Been using it ever since while all the other products I have collect dust.

Tom B.

I added this to the gas and was amazed… it stopped making the sound that I thought was a rod bearing.

My truck engine has over 200,000 miles and a knock started and I thought it was a rod bearing. I was reading the label on the product Complete Engine Treatment and the words, (stops engine knocks.) I added this to the gas and was amazed, and still am, it stopped making the sound that I thought was a rod bearing. I do have to add the treatment to each fill up, but it does work.

Jack

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.

RELATED NEWS

READ MORE NEWS

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

500 Festival and Lucas Oil Form Five-Year Partnership to Strengthen Community Impact of the 500 Festival Parade

August 28, 2026

500 Festival and Lucas Oil Form Five-Year Partnership to Strengthen Community Impact of the 500 Festival Parade

Lucas Oil Named a 2026 Community Impact Winner by Culture of Good, Inc.

May 27, 2026

Lucas Oil Named a 2026 Community Impact Winner by Culture of Good, Inc.