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Yes, the higher the compression ratio, the more octane the fuel has to be. Anything over 10.0:1 has to be 91 or higher. However, if performance is not an issue, than you can use any type of fuel you want, but car will not accelerate fast and its torque curve will be very bad.
Using low octane fuel in a high compression engine will also cause knocking (pinging, pinking). This will cause damage if continued.
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What is the correct octane rating for 10.5 to 1 compression ratio?
For a compression ratio of 10.5:1, the recommended octane rating is typically around 91-93 octane. Higher compression ratios require higher octane fuel to prevent knocking or pre-ignition in the engine. It is important to use the correct octane rating to ensure optimal performance and to avoid engine damage.
What octane gasoline must be used in an engine with 10.5 compression ratio?
91 +
1958 Cadillac what octane of gas?
Cadillac 1958 with the compression ratio of 10.25:1 should not run on gas below 98 octane.
Can the Oldsmobile aurora run on regular gas?
It can ..but the compression ratio require 91 octane minimum...
What is the spontaneous combustion of the charge commonly caused by low octane fuel or excessive compression ratio?
Autoignition
What is the octane level for a 1991 Chevy Caprice?
305 Small Block Chevy engines typically were 8.6 compression ratio and would use 87 octane fuel.
What fuel octane does a 1975 El Camino use?
By '75 they had reduced the compression ratio significantly, so you can use the cheap stuff. 85 octane is high enough.
What octane gas for a 2007 Pontiac Grand Prix gxp?
GXPs come with the LS4 motor so with the compression ratio it's not recommended to go below 91 octane.
Engine knock in a 2.2 Chrysler?
what is the compression ratio and recommended gas octane? try a higher octane fuel and see what happens, mileage may go up also.
What octane is need for 15.5 compression ratio?
It depends on the combination, but I would think you'd need at least 107 or higher.
Why is the compression ratio of a spark ignition engine limited to about 9.51?
So the engine can run on regular 87 octane gasoline.
What octane for 1973 450SL Mercedes?
93, This engine has a compression ratio that should allow it to use regular unleaded gasoline.
