Many years ago I was given a 9.9 Johnson two-stroke outboard motor because my friend said it smoked too much. I did all my normal tune-ups but it still smoked excessively. I tried new gas and different two stroke oils and additives but it didn't make a difference until I used Amsoil 2-stroke injector oil. After I ran through a couple of tanks of gas, the oil smoking dropped dramatically. Since this experience, I have used this oil in all my two-strokes and I am very happy with it's performance.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Great oil
By 
MARK, 
a 
Verified Buyer 
on 
October 26, 2025
I've been using this for several years. I think it made my engine idle a little faster. My engine is a 94 evanrude 150. I"m just t rying to keep the carbon down on the cylinder rings.
I was given an Evinrude two-stroke outboard motor by a friend because he hated the amount of smoke it produced. I tried all the usual tune-up procedures (new gas, spark plugs, fuel filter, carb overhaul, engine flush, etc.) but it still smoked a lot. I finally drained the gas tank and added fresh gas with Amsoil 2-stroke injector oil. Within about 15 minutes, the amount of smoke decreased to virtually nothing.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Excellent product
By 
BLAIR, 
a 
Verified Buyer 
on 
January 08, 2023
I have been extremely happy with the results I get with my 2 stroke outboard motor. Burns clean, no odor, and engine runs great. Will never use anything else.
I have a 2015 Back Country Renegade 800 ETEC that I have owned since new, it now has 11,000 kms. I have been running Amsoil since about the 1,000 km mark. I had a check engine light come on that indicated a RAVE valve issue so I took them apart for cleaning before replacing the sensor. They looked like brand new. Anyone I showed couldn't believe how clean they were. Also had a look at the pistons and cylinders while I was in there and there are no signs of scoring or unusual wear. I got a 2021 850 last year and this oil is all I have ever run. Looking forward to another 10,000 kms.
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