Why is 91 fuel bad for your car?
If, for example, your car says ‘premium 95’, then it is not recommended to use unleaded 91, as doing so can cause engine knocking and potentially engine failure. This isn’t guaranteed to happen of course, but you will probably experience a loss of power, acceleration and fuel economy over time.
What octane level is 91?
Octane rating is the measure of a fuel’s ability to resist “knocking” or “pinging” during combustion, caused by the air/fuel mixture detonating prematurely in the engine. In the U.S., unleaded gasoline typically has octane ratings of 87 (regular), 88–90 (midgrade), and 91–94 (premium).
Is 91 octane the same as 91 Aki?
The good news is that at its most basic level, regular gas is regular gas, and 91 RON in Germany is equivalent to 87 AKI in the United States. Premium is the same, and while premium gasoline is often called “super” by some retailers, 95 RON in Germany is equivalent to 91 AKI in the USA and Canada.
Can I use 98 octane instead 95?
The main difference between 95 petrol and 98 petrol is ‘knock’ resistance. 95 petrol works as well, but if your engine is powerful, it will use higher pressures that 95 petrol may not be able to withstand. If you want to be on the safe side, 98 petrol will offer your engine better protection.
Will 91 octane hurt my engine?
“Use premium unleaded gasoline with a posted octane rating of 91 or higher. If the octane rating is less than 91, you could damage the engine and may void your vehicle warranty. If heavy knocking is heard when using gasoline rated at 91 octane or higher, the engine needs service.”
What is the highest octane race fuel?
104 Octane Fuels
PSC’s 104 Octane Fuel is the highest octane rated unleaded racing fuel that we offer making it a popular choice for racers looking for a high-octane gas in an unleaded form. This fuel provides peak performance due to the higher level of oxygenates that you can’t get from regular pump gas.
Can you run 93 octane on a 91 octane tune?
Never use a octane lower than what’s prescribed by the tune. You may use a higher octane than prescribed by the tune. For example, running 93 Octane (R+M)/2 on a 91 Octane (R+M)/2 program is fine, and in some cases may offer a bump in performance.
What does Aki 91 mean?
The AKI is an average of two other octane numbers, the RON and the Motor Octane Number (MON), which are determined by two different laboratory tests. For example, a 95 RON plus an 87 MON averages to a 91 AKI, which is the octane rating you would see displayed on a U.S. retail fuel site dispenser.
Why is 98 octane better?
Fuels such as 95 or 98 RON (octane rating number) have a higher resistance to burn which indicates higher levels of energy available for the vehicle’s engine. Using 98 might give 3 per cent reduction over 95, again assuming the computer adjusts the engine parameters.
Can you put 91 octane petrol in a 95 octane car?
So its not the end of the world – or your car – if it is supposed to run on 95 octane petrol and you put 91 in the fuel tank instead. But if the manufacturer recommends that your car should be running on 95, then you should use that fuel.
Why are service stations running out of 91 octane petrol?
For a little while motorists were affected as well, the result of fuel companies deliberately deciding to concentrate on maintaining supplies of regular 91 octane petrol to service stations, particularly in Auckland. This meant that for a short time some service stations ran out of 95 octane petrol.
Where do I find the octane rating on my car?
If the manufacturer judges that the best performance, economy and even reliability can be achieved by using 95 octane petrol, then that will be the recommended octane rating. The recommended octane is usually displayed on the inside of your vehicle’s fuel flap.