Does gas grade really effect performerce that much?

[dansu92833]

Most time Im use 87(oct) in place call sams club. But manual said recommend 91(oct).

serious if I end up use 91 all the time. That mean Im not really saving money on gas money. But in other hand...if im keep using 87 will that damage or change my performance in long term?(or worse void my warranty.)

[ARKQX33V6]

What does your manual indicate as far as grade. Using a higher octane than specified causes a carbon build up, but if you are experiencing pre ignition a higher octane may be needed, but if you are not experiencing pre ignition do not use a higher octane. The timing on modern cars is dynamic and sensors will notice the pre ignition and the timing will be advanced to take care of it.

The use of a higher octane fuel where a regular fuel will do is costly unless you want a fuel with zero ethanol. Read the pump, they will indicate 5% to 10% of the corn alcohol

[telcoman]

Most time Im use 87(oct) in place call sams club. But manual said recommend 91(oct).

serious if I end up use 91 all the time. That mean Im not really saving money on gas money. But in other hand...if im keep using 87 will that damage or change my performance in long term?(or worse void my warranty.)

if im keep using 87 will that damage or change my performance in long term?(or worse void my warranty.)

No

Telcoman