R56 87 or 91... any difference in MPG?
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#4
Don't know. Never tried going below 91(there's only 87,89 and 93 sold here-so I've not gone below 93 actually). I think my main concern would be more to do with a damaged engine versus mpg consideration. I'm sure there's Mini's who has been filled with 87 all their lives and been fine. However, the 20 cents difference is cheap insurance IMO. :P
Although, seeing as how diesel is only 20 cents more than premium here, I wish I had a Mini diesel and enjoy 60mpg. ;/
Although, seeing as how diesel is only 20 cents more than premium here, I wish I had a Mini diesel and enjoy 60mpg. ;/
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#11
The owners manual (for 09 at least) says no damage for 87 but performance my suffer. I have tried both in our non s clubman and really found little difference. The milage differences I have found seem to be more related to brand of fuel vs 87 or 93. But like was said above this a talked about a lot and some will say one thing some will say the other. MINI says 87 is ok so no harm in trying. My dealer said top tier fuel it more important than grade.
#12
Thank you.
I have always used top tier gasolines with the recommended grade from the manufacturer. No worries this way.
Pat
#13
#15
Thank you SaltNPepa!
Finally a meaningful reply.
Finally a meaningful reply.
The owners manual (for 09 at least) says no damage for 87 but performance my suffer. I have tried both in our non s clubman and really found little difference. The milage differences I have found seem to be more related to brand of fuel vs 87 or 93. But like was said above this a talked about a lot and some will say one thing some will say the other. MINI says 87 is ok so no harm in trying. My dealer said top tier fuel it more important than grade.
#17
#18
I read the thread that was previously mentioned and it tells all you need to now. Maybe if everyone read that thread this one would end. I know I fell asleep reading that thing. And really all you need to read is this and then your done.
http://www.straightdope.com/columns/...nd-regular-gas
Pat
http://www.straightdope.com/columns/...nd-regular-gas
Pat
#19
threads like this are so annoying!
Your recomended octain by the manufacture, (you know, the one that BUILT the car?!!!!) says to use 91 or higher!!!!!!
Why would you "think" you know more then the engineers? no really, why?
you may or may not notice a differance in mpg, but since your engines computer will be "retarding" the timing (such an appropiate word here!) the car will have less then desirable power!
All this to save a whopping $2.00 per fill up?
if you are that concerned about mpg you should have bought a prius!
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87 or 91
2006 MCS with 24,000+ miles and ONLY 87 = 30 mpg overall average.
2008 MC with 10,000+ miles and ONLY 87 = 37 mpg overall average.
2008 MC with 10,000+ miles and ONLY 87 = 37 mpg overall average.