Designed for pre-mix applications as lean as 100:1 ratios or richer. Improves throttle response and lowers or eliminates smoke. Minimizes deposit formation and lowers emissions. Performance emphasis on the cooler operations of water-cooled motors.
Package sizes include:
8-oz. Bottle
8-oz. Bottles (case of 12)
1-Quart Bottle
1-Quart Bottles (case of 12)
30-Gallon Drum
55-Gallon Drum
Outboard Synthetic 2-Stroke Oil is specifically designed for pre-mix water-cooled two-stroke outboard motors, personal watercraft and jet boats.
Outboard Synthetic 2-Stroke Oil is recommended for 100:1 mix ratios in normal service. Richer mix ratios may be used where desired, although certain benefits such as reduced smoke and deposits may be compromised.
| RATIO | OIL | FUEL |
| 32:1 | 4.0 oz. | 1 US GAL |
| 40:1 | 3.2 oz. | 1 US GAL |
| 50:1 | 2.6 oz. | 1 US GAL |
| 80:1 | 1.6 oz. | 1 US GAL |
| 100:1 | 1.3 oz. | 1 US GAL |
Specifically designed for outboard motors, Outboard 100:1 Pre-Mix Synthetic 2-Stroke Oil contains a heavy dose of low-temperature dispersant additives that excel at reducing varnish and carbon deposit formation in water-cooled motors. Its low-smoke, low-odor, low-toxicity properties produce fewer emissions at 100:1 mix ratios than oils mixed at 50:1, benefitting operators and the environment. Outboard Synthetic 2-Stroke Oil is formulated to prevent "oil loading" and plug fouling for rapid throttle response, making it ideal for trolling motors. Recommended for pre-mix use where TC-W3 is specified.
AMSOIL Synthetic 2-Stroke Oil has been providing improved performance and protection in two-stroke engines since 1973. Trust the extensive experience of AMSOIL,
The First in Synthetics®, to do the best job protecting your engine.
Outboard Synthetic 2-Stroke Oil provides premium protection and performance at 100:1 mix ratios. It is formulated for hot-operating two-stroke outboard motors, effectively fighting carbon/deposit formation and preventing ring sticking.
Outboard Synthetic 2-Stroke Oil's synthetic formulation burns clean. When mixed at 100:1, smoke is virtually undetectable. Boaters subjected to smoke and fumes benefit from these low-emission properties.
This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS).
Click here to view the MSDS Data Sheet for AMSOIL ATO.
Keep out of the reach of children. Don't pollute. Return used oil to collection centers.
| TYPICAL TECHNICAL PROPERTIES Saber Outboard Synthetic 100:1 Pre-Mix 2-Cycle Oil (ATO) | |
| Kinematic Viscosity @ 100°C, cSt (ASTM D445) | 17.9 |
| Kinematic Viscosity @ 40°C, cSt (ASTM D445) | 141.2 |
| Viscosity Index (ASTM D2270) | 141 |
| Pour Point °C (°F) (ASTM D97) | -33 (-27) |
| Flash Point °C (°F) (ASTM D92) | 120 (248) |
| Fire Point °C (°F) (ASTM D92) | 138 (280) |
Product Name: Outboard 100:1 Pre-Mix Synthetic 2-Stroke Oil (ATO)
Current Rating: 4.69out of 5 stars
Votes & Reviews: 13 vote(s) and 11 user reviews.
Reviewed by 77 CVX16: 
Started using Amsoil 100:1 outboard oil two years ago. It considerably reduced the smoke and idle load up on my 1990 Johnson GT150. Now she purrs like a kitten on idle and roars to life under power! Love this stuff. Highly recommend.
Reviewed by Jan R:
This 100:1 premix works great for my 115 outboard. I disconnected the oil injection before it failed and ruined my motor. Now converting my jet skis to premix.
Reviewed by Rick The Wrench:
I have been repairing outboards for over 35 years and the outboards that this product shines at are the OMC'S Johnson and Evinrude,s they have a vro system that fail and burn up powerheads I have converted them to premix 100 to 1 before and after burn downs and have great reviews as to them running better than they did new. They start better idle better and all around run better with less smok.
Reviewed by 91 Johnson:
The oiler for my outboard has been removed and I premix the gas and oil. I have been running the 100 to 1 AMSOIL at a100 to 1 ratio for 6 years or more. I push the little 60 hard and have had no oil related problems. There is virtually no smoke and I have never fouled a plug. This is a great product. I think it has extended the life of the engine because the mechanics I consult tell me most of these motor are done in when the oiler fails. Its a great product that I will continue to use.
Reviewed by Stephen Orsak:
This oil works great! Smoke from the engines reduced
Reviewed by Ty:
I used this on 2 boats both being 2 strokes. 1 is a bass boat with a 150 merc. Other is a offshore boat with twin 175 mercs. In both cases I started with 80:1 mix being new to Ams-oil. After intensive research I went for the 100:1 mix. Both boats smoke much less. They dont load up like before idling and trolling. Did a compression check on all 3 motors and all stayed the same. I will continue using this.
Reviewed by Postal:
Ran this oil in my yamaha 50 hp two stroke. Ran smooth and flawlessly. Less smoke and plugs came out clean. Switching all my premix outboards to this oil .
Reviewed by Bill:
I purchased this to use in my 1993 Johnson 150. Trying to cut down on smoke. It has helped some. I can say the idle seems much better and the obvious use of oil is cut in half.
Reviewed by Keith:
I really like the smaller container. I don't use my boat that much and a quart size bottle lasts for more than a year. The smaller container is just right for me.
Canada
United States
Great product
Use in my outboard, no smoke , plugs clean, easy starting, can't ask for more. Have used for many years.