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BroadHopper · 08-25-2016, 06:22 AM

The more advanced engines today not only burn cleaner but provide better mileage. MBs, BMWs and Audis requires 91 in the states, more in Europe. The ECM compensate for lack of high octane in the states. I was told by other European performance car owners that they notice a difference if they find higher octane gas.

The new 4 cylinder, turbo engines provide as much HP and torque as the old small block V8. They do require higher octane to prevent knocking, especially when the turbo kicks in.

I read somewhere that there will be a demand for 91+ octane in the future because of the strict emission as well as gas consumption regulations. This will cause the refineries to produce higher octane gas and hopefully the price will go down. Today the refineries are not producing enough high octane gas so the prices are high.

08-25-2016, 06:22 AM	#19
BroadHopper Senior Member Join Date: Oct 2004 Location: Laconia NH Posts: 5,512 Thanks: 3,118 Thanked 1,090 Times in 784 Posts	Modern engines The more advanced engines today not only burn cleaner but provide better mileage. MBs, BMWs and Audis requires 91 in the states, more in Europe. The ECM compensate for lack of high octane in the states. I was told by other European performance car owners that they notice a difference if they find higher octane gas. The new 4 cylinder, turbo engines provide as much HP and torque as the old small block V8. They do require higher octane to prevent knocking, especially when the turbo kicks in. I read somewhere that there will be a demand for 91+ octane in the future because of the strict emission as well as gas consumption regulations. This will cause the refineries to produce higher octane gas and hopefully the price will go down. Today the refineries are not producing enough high octane gas so the prices are high. __________________ Someday may never be an actual day.