My Yamaha F115 outboard runs smoothly and efficiently. Been using this oil for the last 5 years, highly recommended!
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Engine
By 
ANTHONY, 
a 
Verified Buyer 
from 
Port Colborne Ontario Canada 
on 
November 13, 2024
I've been using this oil in my 75hp Yamaha for 10 Plus years
I'm a charter boat for fishing which means I depend on my motor running at peak performance
This motor idles for 2-6 hours per trip. I inspect my spark plugs regularly and have never had an issue with fouling plugs. when i go to full throttle she never lets me down. I change its oil once a year and like what I see.
Great oil as always. However, got a new motor this year and the look up guide sucks. Hasn’t been changed in years. Just refer to your owners manual for correct application.
Good stuff! Got it in my cars, trucks (diesel & gas), tractors, mowers, saws, skid steer, backhoe, boat, bikes, & bedrooms (squeaky hinges/springs ya know). AMSOIL hasn't let me down in 25 years. Proud, proud, proud!
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Suzuki 150hp & Suzuki 9.9hp
By 
Too Tall, 
a 
Verified Buyer 
from 
Port Angeles, WA. 
on 
April 24, 2024
Been using Amsoil Marine Oil since motors were new, 2009. Have had zero engine problems. Also use lower unit oil, filters and grease.
Quality products
By 
Mike K, 
a 
Verified Buyer 
from 
NJ 
on 
April 03, 2024
I have been running Amsoil marine products in my Yamaha SHO outboards since 2014. The motors run great even under the heavy strain of "run and gun" bass fishing. Shifting with the Amsoil lower gear oil is fantastic, no clunking going between forward/reverse and the contamination during yearly changes is minimal.
Have used Amsoil in my Honda 225 s since new in 2006..they now have 1000 hours on them..they have never used any oil ..oil after each season looks like it has never been used
I ordered oil and oil filter for my mercury but they didn’t send me the wright filter and they didn’t gave me my money back…very 30058720 poor service
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5 star rating
Best on the he market
By 
STEPHEN, 
a 
Verified Buyer 
on 
February 29, 2024
This is the best marine oil out there. Tested it in my boat.
I will be changing the oil in my boat motor sometime this spring. this will be the second season on the motor. I was advised by the dealership to use Mercury marine oil on the first oil change for brake-in purposes. This will be the first oil change for Amsoil.
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5 star rating
MARINE ENGINE OIL
By 
EDWARD, 
a 
Verified Buyer 
from 
Great Lakes 
on 
November 22, 2023
We have been using this oil in our 1991 4.3L engine for over a decade. The engine now has a few thousand hours on it. We use nothing but Amsoil in all our rigs (trucks, sleds, boat motors)
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
idle
By 
Tony, 
a 
Verified Buyer 
from 
port colborne 
on 
November 10, 2023
75 HP Yamaha.This oil is great as the years have shown me; as this engine idles 3-6 hours without carbon buildup and when i accelerate to top speed (weather permitting) there is no smoke or hesitation
When I check the spark plugs they are in excellent condition .
Have been using Amzoil for 17 year's have never had an oil related problem. Put marine oil in 300 hp mercury and 15 hp kicker the kicker was noticeable smoother running.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Marine oil
By 
GEORGE, 
a 
Verified Buyer 
on 
October 24, 2023
Great product. Used in a 2004 Seaswirl.
No problems.
Put this oil in my 2003 Suzuki 4 stroke. Got about 80 hours on the oil. Amsoil superior modifiers work as engineered. Allows the filter to remove all impurities. Oil looks like new. I just change oil filter after the first run of the season
We have a 23 ft Chapparal with a Chevy 454 and a Mercruiser Bravo3 outdrive. The 454 has 750 hours and runs as smooth as silk. The Amsoil 10W40 Marine is very special. The throttle response is incredible and the consumption of fuel is minimal. Considering this is a Chevy / Mercruiser454 I expected this boat to be a gas guzzler. The Mercruiser 7.4 liter has multi port fuel injection and is far more efficient than the Chevy 350 Mercruiser. Using Amsoil synthetic has made a tremendous difference. We cruise our boat on Lake Geneva in southern Wisconsin, and can circle the 25 to 26 miles around the lake using a little more than 5 gallons of fuel. The previous owner was somewhat cheap and used 10W40 conventional oil. He got about 3 mpg and refused to believe the difference I got using Amsoil. My fuel savings over the course of the Summer paid for the 6 qts of of Amsoil 3 times over using conventional oil. This is a clear cut example of cost versus price. I can actually say that the Amsoil literally paid for itself over lower priced conventional oil.
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