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Gas recommended for MCS

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  #326  
Old 01-16-2015, 02:59 PM
fastzombie fastzombie is offline
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I never run anything less than super. I ran 89 a few times and you could notice much more pinging under acceleration. Maybe just psychological but I feel better running my local 93 all the time.
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  #327  
Old 04-20-2017, 01:47 PM
Thumper Simpson Thumper Simpson is offline
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Quote:
Originally Posted by hugh View Post
Kaelaria...patience!!!

Peeple Puleeze !!! Calulator time:

Drive 20,000 miles per year.

Get 25 mpg (hopefully better but...)

That's 800 gallons of petrol.

Here in NJ, premium is 10 cent per gallon more than mid range.

That comes out to $80 per year!:smile: :smile:

Did ANYONE pay less than $20,000 out-the-door for their car?

Is $20080 THAT MUCH MORE?

HS
yes. $4300.
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  #328  
Old 04-20-2017, 01:49 PM
Thumper Simpson Thumper Simpson is offline
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Quote:
Originally Posted by Tab32 View Post
Although it's "safe" to do I suppose, there is definitely a noticeable decrease in power AND gas mileage when using just 89 octane. I think it's less efficient to try and skim by with a lower fuel grade rather than using the recommended fuel grade...

Why would you buy the 'S' if you're not going to drive it like it was meant to be driven!
Around here, 91 octane is 60 cents higher than 89 octane.
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  #329  
Old 07-16-2017, 09:19 AM
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In both my mcs I have only run 91, that's because I had a turbo Audi that I tried to be cheap on an it cost me $5000 to repair the engine damage!
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  #330  
Old 08-08-2017, 01:43 AM
Aldamar Aldamar is offline
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I didn't even realize it was a premium engine when I got mine (2005 R50).

I ran it for ~10,000 miles on regular 87 octane fuel - then one day saw the sticker on the fuel door saying "Premium 91 octane only". I immediately switched over and...

There has been absolutely no difference. Gas mileage - same. Power - same. Engine noise - same. Still, it is the fuel the engine was designed to use, so I don't mind paying a couple bucks extra. I still get about 36 to the gallon, so I'm not complaining.

- Ald
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  #331  
Old 12-06-2017, 09:45 AM
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Bayce3 Bayce3 is offline
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Quote:
Originally Posted by Aldamar View Post
I didn't even realize it was a premium engine when I got mine (2005 R50).

I ran it for ~10,000 miles on regular 87 octane fuel - then one day saw the sticker on the fuel door saying "Premium 91 octane only". I immediately switched over and...

There has been absolutely no difference. Gas mileage - same. Power - same. Engine noise - same. Still, it is the fuel the engine was designed to use, so I don't mind paying a couple bucks extra. I still get about 36 to the gallon, so I'm not complaining.

- Ald
I had the same experience....bought mine from a guy here ...an 02 R50, the first day I got it the clutch went out and had to be replaced...I was on my way to the gas station to fuel up and didn't get to know that until 2 weeks later when I got the car back...been running 93 up until a couple days ago when I had to put in 89 ( non ethanol) my mileage actually went up and my car runs quieter and smoother.......not sure what that is......I'm probably going to go back to 93 ( that's what we have here in eastern NC) 93, 89 and 87.......but the non ethanol 89 gave me pause......Love my mini though
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  #332  
Old 12-14-2017, 01:27 PM
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gsfent gsfent is offline
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Originally Posted by Bayce3 View Post
I had the same experience....bought mine from a guy here ...an 02 R50, the first day I got it the clutch went out and had to be replaced...I was on my way to the gas station to fuel up and didn't get to know that until 2 weeks later when I got the car back...been running 93 up until a couple days ago when I had to put in 89 ( non ethanol) my mileage actually went up and my car runs quieter and smoother.......not sure what that is......I'm probably going to go back to 93 ( that's what we have here in eastern NC) 93, 89 and 87.......but the non ethanol 89 gave me pause......Love my mini though
Non ethanol will give better mileage because it has more units of energy (BTU's). Ethanol is designed to replace fossil fuels. A 10% blend of ethanol typically affects mileage in roughly the same proportion. So there is no $$$ savings, just savings of fossil fuels (at least in theory).

If you don't drive hard, don't worry about the lower octane. Cruising on the highway use what you want. But if you are driving the car the way it was meant to be driven , 93 is the better choice. IMHO.

Regards,
Jerry
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