NEW AMSOIL Preferred Customer Program

25W-40 Synthetic Blend Marine Engine OilHelp

25W-40 Synthetic Blend Marine Engine Oil Product Image
Click image to enlarge
$9.55 Retail Price (USD)
Package Size:
Unit of Measure:
QTY:
Product Code: WCMQT-EA
Product Highlights View Full Description

Engine performance and reliability are key to a successful day fishing or boating. High-rpm operation and constant exposure to water, however, invite engine wear and formation of rust and corrosion, reducing engine performance and life. AMSOIL 25W-40 Synthetic Blend Marine Engine Oil guards against wear while delivering excellent protection against rust and corrosion. It is Warranty Secure® and will not void your marine engine’s warranty.

Protects Against Wear
Marine engines operate under high loads and rpm for extended periods. On average, a marine engine powering a boat 30 mph runs at about 5,000 rpm. In contrast, an automotive engine powering a car 60 mph runs at about 2,000 rpm. Higher stress causes traditional automotive oils to break down and lose viscosity. AMSOIL 25W-40 Synthetic Blend Marine Engine Oil is designed with excellent shear stability to deliver a consistent lubricating film. It helps guard engine components from wear for maximum life.

Excellent Anti-Rust Performance
Marine engines are prone to rust and corrosion due to constant exposure to humid, wet environments. Rust on engine parts acts like sandpaper, scouring bearings, the cylinder wall, piston rings and other components, while aluminum pistons and other parts can corrode. Rust and corrosion reduce engine power and eventually cause catastrophic failure.

Good rust protection is not natural to motor oil; it comes only by design. AMSOIL 25W-40 Synthetic Blend Marine Engine Oil is fortified with potent inhibitors that guard against damaging rust and corrosion.

  • Excellent high-stress, high-rpm endurance
  • Increased rust and corrosion protection

NMMA Certified
AMSOIL 25W-40 Synthetic Blend Marine Engine Oil is certified by the National Marine Manufacturers Association (NMMA) for use in four-stroke outboards, inboards, stern-drives (inboard/outboards) and PWC. This high-quality oil demonstrates outstanding performance and exceeds the NMMA “FC-W” (Four Cycle – Water) specification requirements.

  • FC-W (CAT)® Registration Number: FC-11825T

* All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use. All products advertised here are AMSOIL-engineered for use in the applications shown.

APPLICATIONS
Use in gasoline-fueled four-stroke inboards, outboards, inboard/outboards and personal watercraft that require any of the specifications listed below, including those made by Mercury* and Mercruiser*.

  • API SM
  • NMMA FC-W Catalyst Compatible

SERVICE LIFE
Four-stroke outboard motors and personal watercraft: Due to potential fuel dilution or water contamination, change oil at the engine or watercraft manufacturer-recommended interval. Inboard and I/O applications: Change oil at two times the engine manufacturer-recommended interval, or once a year, whichever comes first.

WARRANTY
AMSOIL 25W-40 Synthetic Blend Marine Engine Oil is Warranty Secure®, keeping your factory warranty intact. It is a high-performance replacement for vehicle manufacturer-branded products and is also backed by the AMSOIL Limited Warranty (G1363). For details, visit www.amsoil.com/warrantysecure.

Warranty Secure

HEALTH & SAFETY
This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Safety Data Sheet (SDS). And SDS is available via the Internet at www.amsoil.com or upon request at (715) 392-7101. Keep Out of Reach of Children. Recycle used oil and bottle.

WCM Package Sizes
Code Package Size Unit of Measure Product
WCMQT (WCMQT-EA) Quart Each 25W-40 Synthetic Blend Marine Engine Oil
WCMQT (WCMQT-CA) Quart Case of 12 25W-40 Synthetic Blend Marine Engine Oil
More about AMSOIL Reviews

REVIEW SNAPSHOT®

by PowerReviews
AMSOIL25W-40 Synthetic Blend Marine Engine Oil
 
5.0

(based on 4 reviews)

Ratings Distribution

  • 5 Stars

     

    (4)

  • 4 Stars

     

    (0)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Reviewed by 4 customers

Displaying reviews 1-4

Back to top

(0 of 1 customers found this review helpful)

 
5.0

Awesome

By 

from Maplesville AL.

Verified Buyer

Comments about 25W-40 Synthetic Blend Marine Engine Oil:

I purchased tis for my mercury, and i cant say enough about it, I have enjoyed using the amsoil product in everything i have and i will continue the use of it

  • How would you describe yourself?:
  • I'm a professional mechanic
  • What kind of vehicle/equipment do you have?:
  • Boat, Truck, lawnmower, motocycle

(0 of 1 customers found this review helpful)

 
5.0

2nd to none

By 

from Long island new york

Verified Buyer

Comments about AMSOIL 10W-40 Synthetic Marine Engine Oil:

Outboard

  • Was this a gift?:
  • No
  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • Boat

(1 of 3 customers found this review helpful)

 
5.0

Revived engine performance

By 

from Grand Haven, MI

Verified Buyer

Comments about AMSOIL 10W-40 Synthetic Marine Engine Oil:

I thought I'd try Amsoil Marine 10W-40 in my 23ft I/O that has a GM 350 CID engine. After changing the oil it felt like the engine had gained 30-40 HP. It gets on plane easier, revs faster, and runs as cool or cooler that the 15W-40 diesel oil That was recommended by the marina mechanic. Additionally the oil seems to stay cleaner longer. I just can't see a down side to this oil. It's all good. Pulls my grandchildren on their tubes and skis easier and gets up to speed faster even with a load. Great product.

  • How would you describe yourself?:
  • I'm a full-on gearhead
  • What kind of vehicle/equipment do you have?:
  • 1994 Chapparal boat withe 350 CID

(0 of 1 customers found this review helpful)

 
5.0

Great product.

By 

from Kalispell mt

Verified Buyer

Comments about AMSOIL 10W-40 Synthetic Marine Engine Oil:

I ran this in my mercury optimax 125. It ran cleaner and smoother than when running on the mercury oil!

  • How would you describe yourself?:
  • I love my vehicles / toys

Displaying reviews 1-4

Back to top