By 
KIERAN, 
a 
Verified Buyer 
from 
Long Island NY 
on 
November 23, 2024
Used this oil in my Mercruiser 350's for 1 season So far so good . Better value than mercruiser's oil and easy to locate and buy. Definitely using from now on.
Very good Martine engine oil for mercruiser engines, only upgrade that could be made is having 1 liter bottles instead of 1quart
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Makes the Merc purr
By 
BRIAN, 
a 
Verified Buyer 
on 
October 29, 2024
Good quality oil
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Equal or superior
By 
TIM, 
a 
Verified Buyer 
on 
May 10, 2024
Seems on par or superior to mercury oil. Will see next year when I change it but maintaining warranty and half the price of the alternative and a brand I trust is with the try.
It is impossible for me to rate the quality and performance of this engine oil as it would require equipment, technology and scientific knowledge that I do not possess. The only thing I can say is that it turned up and I put it in the boat. Anything beyond that would be speculation on my part (Rating - I don’t know; Would I recommend- I don’t know). If Amsoil wishes I can send them a sample of the oil at the end of the boating season and they can run the appropriate tests to determine if the oil is still functioning to their specifications. Review complete!
Originally I was using too light of an oil and I went to this 25W40 and was very happy with the oil pressure increase and now it doesn’t seem to go through any oil. Big block Chevy
Bottom Line
Yes, I would recommend this to a friend.
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3 star rating
Oil and Oil fileter
By 
TOM, 
a 
Verified Buyer 
on 
May 19, 2023
The oil is awesome. Customer service SUCKS! I called and asked 3 times on the live chat to get info for an oil filter for my Merc Pro XS 150.....NO RESPONSE!. Check your owners manual and then go a Merc rep to get the oil filter. Apparently AMSOIL doesn't update or do any type of referencing when looking up parts that we can service ourselves
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
BEEN USING THIS 25W-40 SINCE it has been offered
By 
MICHAEL, 
a 
Verified Buyer 
from 
Long Island NY.  
on 
March 09, 2023
Great Oil. Have used it on my 1998 7.4 MPI Bravo 3 since it was first offered. Very little oil consumption. No smoke; engine have been running great with good oil pressure at idle at operating temperature.
We've used Amsoil in both of the boats we've had and neither one ever had any issues. They quietly fire right up and purr like a kitten going across the water. I'll never use anything else.
We've used this oil in our previous boat and our current boat. Our old boat had the 4.3 V6 in it and the new one has the Mercruiser 4.5 V6. We've never had any engine issues with either boat. They both had good oil pressure with no engine noise aside from the expected. Even after it sits for a while I've never heard any lifter noise or anything like that when I first fire it up.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
8.1 mercruiser - 1300 hrs
By 
CHRISTOPHER, 
a 
Verified Buyer 
from 
Tampa  
on 
October 22, 2021
Best oil marina oil on the market. Using oem oil my engines would burn oil every trip . Changed to amsoil instantly stopped consuming oil. Also holds better oil pressure .
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Amsoil Marine Engine Oil
By 
JOHN, 
a 
Verified Buyer 
on 
September 23, 2021
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