My Buick (Posted in sig) has the 3800 supercharged engine. It recommends using premium gasoline. Online recommends premium gasoline to prevent knock and knock retard.
So when I first got the car last year, I started running it on premium for a couple complete fills, then regular for a couple complete fills, and back. I got an OBDLink LX to read values.
On regular, I have not heard any sort of pinging (only misfires after I screwed up one of my plugs. Replaced them all.), the KR value stays at 0, and my knock counter has never budged. I haven't noticed much of a difference in power or efficiency either. This was also when testing my 0-60 times from a stopsign, so this isn't all just casual driving.
So premium is supposed to be this great benefit for premium-requiring cars, namely SC and Turbo cars. But I'm not seeing any of it.
Could something be wrong with my supercharger? Perhaps the sensor? Or would I simply be wasting money on more expensive fuel? Is the effect residual, where I would see increasing KR over time?
So when I first got the car last year, I started running it on premium for a couple complete fills, then regular for a couple complete fills, and back. I got an OBDLink LX to read values.
On regular, I have not heard any sort of pinging (only misfires after I screwed up one of my plugs. Replaced them all.), the KR value stays at 0, and my knock counter has never budged. I haven't noticed much of a difference in power or efficiency either. This was also when testing my 0-60 times from a stopsign, so this isn't all just casual driving.
So premium is supposed to be this great benefit for premium-requiring cars, namely SC and Turbo cars. But I'm not seeing any of it.
Could something be wrong with my supercharger? Perhaps the sensor? Or would I simply be wasting money on more expensive fuel? Is the effect residual, where I would see increasing KR over time?
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