Quote:
Originally Posted by EvoFire
My fuel usage gauge on the M3 ticked up from 13.2 to 13.3 after 3 tanks of 93 fvs using the no eth 91. The car drives a lot better though(it may potentially be related to the cooler temperatures as well)
The fuel usage on my X3 ticked up as well from 12.5 to 12.6, but I saw no butt dyno differences in drivability so that's going back to 91.
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On the X3, are you saying you are planning to go back to Shell 91?
Bear in mind that prior to the introduction of Shell 93, Shell 91 is a no-ethanol gas. But with the way Shell is handling its Shell 93 gas now, their current Shell 91 has to be a mix of their 93 and 87 gas, so the Shell 91 now is still gonna be an ethanol blend up to E10.