After what Todd said during the last podcast and what Ian posted over at gbmini, I thought I would do a little experimentation, you know, to help you, the faithful dbmini.us reader and wrr podcast listener.
This morning when I filled up with gas, I put in regular unleaded.
DISCLAIMER – My MINI is about 45K miles out of warranty. The owners manual and your dealer’s service dept. will all say that’s a huge no-no. I’m sure my SA would tell me the same thing. I highly recommend not doing it. That being said…
I’m going to give it 2 tankfuls. So far I can tell a difference in the idle with the A/C running at a stop light. Oddly enough, it’s not quite so rough after only 60 miles on this tank.
The problem that I have is when the A/C is on and I come to a stop, the cooling fan kicks in. When that happens, I get a big shudder until she almost stalls (drops to about 500 RPM), then she sputters back to normal. I’m running the latest greatest software for the MC, but it still will not go away, no matter what is done.
I will also be checking gas mileage and hope to get an idea of power loss, if any. I’m not going to get any dyno results, but I should still be able to tell.
I’ll post an update after cruising around more today and tomorrow.