around 90
It depends upon where it is you live, but in most places in North America, Premium is considered anything above 91.
Yes you can use premium gasoline in unleaded because premium gasoline is also unleaded. The only reason it is called premium gasoline is because it has a higher octance then regular unleaded. Regular unleaded has an octane rating of 87 and premium has an octane rating of 92. Premium gasoline burns slower then regualr gas because it has a higher octane rating.
No, 89 octane is not typically considered premium gasoline. Premium gasoline usually has an octane rating of 91 or higher. The 89 octane fuel is often classified as mid-grade gasoline, which is suitable for many vehicles that require higher octane than regular (usually 87 octane) but do not require the higher performance of premium. Always check your vehicle's owner manual for the recommended fuel type.
No, 87 octane is sufficient
Premium gasoline is gasoline that has been blended to meet an octane rating higher than "Regular" gasoline. Higher octane gasoline contains hydrocarbon components which are more branched or have a lower hydrogen to carbon ratio than those with lower octane. In the United States the typical octane numbers, (RON+MON)/2 are as follows: Regular = 87 Plus = 89 Supreme = 93. Typical octane ratings vary in different locations and in some cases elevations.
At least 91% octane or better. So premium
Yes. All Unleaded Gasoline Mercedes Benz vehicles require Premium (91 Octane and above) Gasoline. Do not use anything other than Premium Gasoline. Lower grade gasoline can harm the engine.
There are many different grades of gasoline, each with a different octane rating. Early gasoline had very low octane in many cases, from the 1920s to the 1970s octane rating was improved by adding a highly poisonous chemical called tetraethyl lead and ranged from about 90 to 110 octane, most modern cars can run on 87 octane unleaded (now considered "regular" grade gasoline), "premium" grade gasoline is around 90 to 92 octane unleaded, airplane gasoline is typically 130 octane leaded.
Premium gasoline is rated between 91 and 93 octane, while regular is rated at 87 octane. The octane rating is the resistance of the gasoline to igniting, and higher compression engines need higher octane rating to prevent pre-detonation or pinging. Check your owner's manual to see if you need premium or can run the less expensive regular.
93 octane premium fuel. You just spent 10-40k on a motorcycle, treat it as such...
In Canada, the most commonly used grades of gasoline are regular (87 octane), mid-grade (89 octane), and premium (91-94 octane). The type of gas you should use largely depends on your vehicle's requirements, which can typically be found in the owner's manual. Regular gasoline is suitable for most vehicles, while premium gas is recommended for high-performance or luxury cars that require higher octane levels. Always refer to your vehicle's specifications for the best guidance.
Most small engines are designed to run on regular unleaded gasoline; the higher octane premium gasoline may eventually be harmful to the engine.