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Jetboaters Admiral
- Messages
- 3,446
- Reaction score
- 3,744
- Points
- 357
- Location
- Pelican Rapids, MN
- Boat Make
- Yamaha
- Year
- 2011
- Boat Model
- Limited S
- Boat Length
- 24
This thread is mixing the issues of 1) Ethanol and 2) Octane. Two completely different topics.
- I've used ethanol in my 3 Yamaha boats since 2003 - never had an ethanol problem ever. I do put fuel stabilizer/treatment in over the winter that is specific to ethanol.
- Octane is for high compression engines and prevents pre detonation (aka engine knock). If your engine doesn't call for high octane fuel you don't need it, and are wasting money buying it for a non high compression engine. It would be like lighting money on fire - total waste! The added octane in high octane fuels does NOTHING for a standard compression engine (non supercharged or turbo charged engine - many turbo charged engines don't need it either). Use the octane level the manufacturer recommends. Now, if you use lower octane gas on a supercharged engine, the engine will adapt and effectively lower the pressure on your engine to prevent pre-detonation (you will lose some power - 20-30% ish).
AMEN, I wish they would get rid of the word Premium etc, when it comes to octane. As it gives the uneducated the impression that its better for their engine.