07-07-2013, 11:47 PM
(07-07-2013, 01:45 PM)Gypped_imp Wrote:(07-07-2013, 12:33 PM)Deanohh_imp Wrote:(07-07-2013, 11:39 AM)_imp Wrote: I read in the Aussie manual that 91 was required, so that is why I was using it. Then read in the US manual 86+ was OK.
Funny but the FZ8 also is fine on 87 according to the manual.
Aussie might be one of the countries that use a different scale for their gas numbers.
Aussie might be one of the countries that use a different scale for their gas numbers.
They do, they use the European system of octane rating. Their 91 is our 87. Using a higher octane fuel than is required for a stock engine will do absolutely nothing for you besides cost more money. As mentioned, if you want to pay more, find 100% gasoline and use that, you will actually get better performance that way (only about 3-4%, but it's also better for the engine). If your fuel says "may contain up to 10% ethanol", you can bet it has 10% ethanol in it.
This is one of those internet arguments that happens constantly and consistently, with everyone going round and round on it.
Aussie might be one of the countries that use a different scale for their gas numbers.
They do, they use the European system of octane rating. Their 91 is our 87. Using a higher octane fuel than is required for a stock engine will do absolutely nothing for you besides cost more money. As mentioned, if you want to pay more, find 100% gasoline and use that, you will actually get better performance that way (only about 3-4%, but it's also better for the engine). If your fuel says "may contain up to 10% ethanol", you can bet it has 10% ethanol in it.
This is one of those internet arguments that happens constantly and consistently, with everyone going round and round on it. This is exactly correct with respect to the Aussie/UK octane rating but not entirely accurate with respect to being able to get more out of the higher octane. Some engines have built-in knock sensors and can automatically adjust ignition timing to take advantage of the higher rating. My FJ Cruiser is one of them but there are many others. The documentation from Toyota specifies this. Since Honda didn't tell us about the speed limiter it's possible that other features are built in that we wouldn't know about either.