Customer Ratings & Reviews

I had a 200hp mercury efi engine that blew up when rod cap came off. Put a new powerhead on it, ran nothing but Amsoil HP in it. Loaned boat to a friend who trimmed it to high causing the engine to overheat. When it was torn down for repair the hone marks were still on the cylinder walls after 3 years.

bought a Grady White with dual yamaha 200 HPDI they were 8 years old. I installed an hour meter which reads 2974 hrs and each of those hours wre Amsol 2 cycle Marine oil. NOT one major problem with these engines. Very Very Smoke.

My boat starts easier and smokes much less since I switched to amsoil 2 years ago.

I been using this oil in my e Tec for 5 year and it works great. It is less expensive and now I use and oil in everything I own. A great product.

I use this in my work boat from April to December on Georgian Bay. I actually gained 3psi of compression when I switched to Amsoil. My boat gets used to haul tools/materials during the day, and for fishing/transport on weekends. Amsoil keeps it running strong.

I use this for my waverunners

Used in an outboard 93 mercury 115 outboard motor. Solved stuttering idle, smoking, and hard starts! Not to mention less fear of friction damage over time! Sceptical at first but wow!

I use Amsoil Hd 2 cycle motor oil for my boat, it runs like a top, easy starting , no smoking. I plan on using other products in the future.

I use this in my 85 Skeeter Starfire with a 150 Black Max Mercury that I've eliminated the oil injuction in. I use this as a premix and it works great

I have used this product on BRP Seadoo and Yamaha Waverunners with great results and no issues. The oil is clean, runs smooth and no smoke. Great product.

Been using this oil in my Yamaha VMax 250 for 14 yrs

I run this in my 09 250 Yamaha HPDI bass boat. Could not be happier, clean plugs, engine runs flawless, very little smoke, and costs less than Yamalube. I also run in my old 25 hp Mercury tiller steer, runs and trolls at idle speeds great. Formerly ran this oil in my 150 hp Johnson for almost 10 years and had zero issues with the motor and a friend now owns the boat and still running great using same oil. 5 stars and costs same if not less than comparable synthetics.

I have been running HP marine in my Evinrude 300 on the lean oil setting for over two years. at least 300 hours of use. My dealer said the spark plugs look cleaner than most and almost did not need replacing after 300 hours. We opted to do so as we were going to put another 300 hours on it before the next service I burn 1/2 tp 3/4 of a gallon each day so XD 100 was adding up. I bought 3 cases of gallons when Amsoil offered free shipping. I was down aroind $30 per gallon where XD100 runs $44 to $48. at the local marina.

I have a 2007 Yamaha VMAX 150 HP on my saltwater flats boat. I was using the Yamaha Lube, but the Amsoil product is superior. I have less smoking, and less consumption with the he Amsoil. It is noticeable. I have now used this product for a year, so it isn't a new phenomenon.

Its the only oil I have used in my last (3) 2 stroke outboards. Best oil on the market.

Excellent product , does exactly as advertised , well done

I ran 6 gallons of Amsoil mix at 1/2(4oz) Normal mix is 8oz per gallon There were no signs of insufficent lubrication Motor didn't smoke quite as much. Of course it wouldn't with only 4 oz. I didn't pay attention to any oil globs coming up from below water line that is present on starting a cold motor with an 8oz mix. So that is still pending observation. I don't think I would go as low as 2oz/gallon though.

Have used this product in all of my outboard motors for last 12 years without any motor problems to include not fouling any plugs recommend it to anyone who has a boat

As a prior engine builder and worrying about engine failure from worn, rod bearings, piston rings, cylinder wall damage, I learned with Amsoil pure synthetic oil there was NO visible wear after numerous races on the engines. I use nothing but Amsoil in all my gasoline engines.

Bought a brand new 90 HP Evinrude Etec outboard motor this year. The Evinrude dealer told me they put AmsOil Hp marine Synthetic 2-stroke oil in the motor. Evinrude will still cover on warranty. The dealer said it's a lot cheaper than buying Evinrude XD100. Works GREAT! No Problems with this oil.