Which of these is better? I wanna save money of course but if 91 octane overall will increase longevity of the vehicle than by all means
Idk if it matters but the winters are harsh and the summers are hot here.
Was recently asked to do a comparison between what the engine computer shows as the alcohol content and by taking an actual sample of the onboard fuel from the fuel rail.
Both vehicles have been driven less than 30 miles since refueling.
The 2012 6.2 Sierra showed a virtual alcohol content of...
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