After carefully reading my owners manual,I notice they recommend 87 octane fuel only.I was wondering if the Speedster would run on 89 octane or would there be any damage to the engines or the emision system.Most marinas in our area don't sell fuel lower than 89 octane,so in an emergency it might be necessary to use a higher octane.I was just wondering what other people are using and might there be a slight performance improvement?Thanks,Gary Legates
Fuel Octane
Started by
Guest_garry1_*
, Sep 26 2005 10:03 PM
2 replies to this topic
#2
jeepstudchris
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- Year of DOO:2004
- Model of DOO:Speedster 200
- Engine in DOO:Twin Rotax 4-TEC
Posted 03 October 2005 - 06:40 PM
There won't be a performance improvement. The higher octane is harder to burn, which prevents pinging. High Compression engines...turbo charges, superchargers do need it to prevent pinging.
There won't be damage to anything...some people swear by the higher octance and only ever use the higher octane...I use the lower octance to save myself some money because it is not required.
The only time damage could occur is if using a lower octance gas then required, pinging is likely and pinging is the fuel igniting when the engine is not ready...an explosion pre-ignition. Which as you could imagine would be very hard on an engine
There won't be damage to anything...some people swear by the higher octance and only ever use the higher octane...I use the lower octance to save myself some money because it is not required.
The only time damage could occur is if using a lower octance gas then required, pinging is likely and pinging is the fuel igniting when the engine is not ready...an explosion pre-ignition. Which as you could imagine would be very hard on an engine
#3
Guest_garry1_*
Guest_garry1_*
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Posted 04 October 2005 - 06:53 PM
Thanks for the info,it makes good sense to me.I'll use the 87 octane also, as long as I can fuel up at a gas station.Also about a dollar cheaper than at marinas.GaryThere won't be a performance improvement. The higher octane is harder to burn, which prevents pinging. High Compression engines...turbo charges, superchargers do need it to prevent pinging.
There won't be damage to anything...some people swear by the higher octance and only ever use the higher octane...I use the lower octance to save myself some money because it is not required.
The only time damage could occur is if using a lower octance gas then required, pinging is likely and pinging is the fuel igniting when the engine is not ready...an explosion pre-ignition. Which as you could imagine would be very hard on an engine
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