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Gas recommended for MCS

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  #26  
Old 08-20-2005, 06:16 AM
resmini resmini is offline
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Quote:
Originally Posted by 62Lincoln
BYE
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  #27  
Old 08-20-2005, 07:16 AM
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Premium.
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  #28  
Old 08-20-2005, 08:11 AM
CooperBeagle CooperBeagle is offline
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Out here in the cornfields the cost difference between regular and premium is shrinking. Used to be 20 cents difference and lately it's only ten.
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  #29  
Old 08-20-2005, 11:12 AM
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This should break this debate up real good...

Guys,

I was just at my dealer, and like every time I visit, I asked if there was any fix for the stalling/stumbling upon a cold-start. He said no, except MINI USA has told them to recommend that any customers complaining of cold-start stalling, should go down to 87 octane gasoline, (even MCS drivers).

That was the second time that he told me this. I am totally confused.

Our owners' manuals clearly state 91 octane. Now they're telling me to use 87 octane. Who do I believe?

Personally, I have decided to ignore the dealer's hackneyed advice, and stick with my 91 (or 93) octane gas. I don't care that it costs more, or that my car stalls on cold-starts. I would rather ensure the longevity of my engine by using the proper octane gasoline, than not.

So, has anyone else been told to go down to 87 octane? Have you? Did it solve the cold-start stall?

Let us know.
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  #30  
Old 08-20-2005, 11:56 AM
eVal eVal is offline
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I would think that if Mini officially made that statement there would be a TSB advising of taking that action based on customer complaints. I would certainly want to see that TSB and have a copy for any future results before following any word of mouth from a dealer.
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  #31  
Old 08-20-2005, 02:16 PM
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91+ octane is only necessary for the 5% of the time most people push their cars hard to the point where 89 octane would cause detonation. For the other 95% of the time, a higher octane gas is a complete waste of money. If you're one that drives like an old man in your commute to and from work, there is absolutely nothing wrong with 89 octane gas despite what the manual says. Of course the manual is going to tell you to use a higher octane gas because the car was made to be driven hard, but don't just blindly follow the manual. If you drive your car like it should be driven, spend the extra $.10 per gallon.
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  #32  
Old 08-20-2005, 11:29 PM
MotorMouth MotorMouth is offline
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The manual says premium, the gas cap says premium, and your MA should have told you premium. If you don't run premium you are giving ammo to the service department to deny warranty service for certain maladies that may result. You really should stick with premium. ESPECIALLY for a S model.
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  #33  
Old 08-22-2005, 06:14 AM
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to add more confusion to the fire, this popped in the mini mania 2 thread over in the DCMM subforum:

" Judging how poorly a MCS runs on +91 octane in the summer I can't see using anything more. We have been running much smoother using 89."

this part of the thread was about whether 100 octane race gas would be available for the driving class ...
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  #34  
Old 08-22-2005, 06:28 AM
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Math makes sense$$$

For the price of gas and the way we all seem to love our MINI's it's a small price to pay. About a dollar more a tankful. I don't have a prob with that cuse "Spike" is definitely worth a dollar more a tank. So lets just hope the price levels off soon so it won't continue to be a pain in the a$$ at the pump.

Quote:
Originally Posted by hugh
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
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  #35  
Old 08-22-2005, 06:49 AM
Autologic Autologic is offline
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Another thought...

20K miles a year
Price of 87: $3.00 gallon
Price of 93: $3.20 gallon

93 Octane getting 25 MPG: Total Gas Cost per Year: $2,560
87 Octane getting 24 MPG: Total Gas Cost per Year: $2,500

Savings of running 97 Octain: $60
% Savings per year: 2.4%
Savings per Month: $5


Hmm....
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  #36  
Old 08-22-2005, 07:30 AM
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OK people......All of you guys are just throwing "what if's" out there and with no hard evidence about what your saying. Nobody knows if it hurts the gas milage or power ( which using lower octane gas would ) unless someone does a test if your all concearned about this.....i will tell you this.....Like everyone else said....the manual tells us to use 91 or better gas.....For the people running into drivablity issues, u now know why. Just because there is something cheaper for us to use, doesnt mean you should use it. Take your own risks and watch yourself being at the dealer more times than you wanna be.


And also.........We here at the dealerships are not scientists so we wouldnt know what gas your running by looking at it or tasting it . There is no way we would know other than what you tell us your running in the vehicle.
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  #37  
Old 08-22-2005, 09:03 AM
Rich.Wolfson Rich.Wolfson is offline
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I found this in the Wikipedia, the free online encyclopedia:

Quote:
In most countries (including all of Europe and Australia) the "headline" octane that would be shown on the pump is the RON, but in the United States and some other countries the headline number is the average of the RON and the MON, sometimes called the Anti-Knock Index (AKI), Road Octane Number (RdON), Pump Octane Number (PON), or (R+M)/2. Because of the 10 point difference noted above, this means that the octane in the United States will be about 4 to 5 points lower than the same fuel elsewhere: 87 octane fuel, the "normal" gasoline in the US and Canada, would be 91 in Europe.
There is no 91 octane fuel here in the NorthEast. Is it possible that the 87 they are selling is indeed the 91 our cars require? The entire reference is here: http://en.wikipedia.org/wiki/Octane_rating

I have never put anything other than Sunoco 93 in my '03 MCS and I have had no problems what so ever. No stumble and only an occasional not starting the first time when cold. I am not interested in using anything less than the Mini engineers recommend. But is it possible that the Sunoco 87 actually is what is recommended?

I thank you all in advance.

Rich
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  #38  
Old 08-22-2005, 09:20 AM
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R u kidding?

Thats all there is around here.....I only see 89,91,93 octane all over NY and the tri-state area. or maybe im wrong.
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  #39  
Old 08-22-2005, 09:32 AM
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What Randy Webb told me over a year ago. The MCS has anti-knock sensors that will detect detonation and retard timing (as much as 11 degrees) or, dump more fuel to cool the cylinder or both. So, while you will most likely not hear a pinging, you will sacrafice power and/or milege by running a lower octane. Putting around town may not be a big deal but, if you jump on it.. now the ECU will start its dance "Da Da Da Retard timeing, Bo-wap, Bo-wap... ad fuel, wup-tee-dee do both, la la... la la"
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  #40  
Old 08-22-2005, 10:03 AM
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Quote:
Originally Posted by apexer
What Randy Webb told me over a year ago. The MCS has anti-knock sensors that will detect detonation and retard timing (as much as 11 degrees) or, dump more fuel to cool the cylinder or both. So, while you will most likely not hear a pinging, you will sacrafice power and/or milege by running a lower octane. Putting around town may not be a big deal but, if you jump on it.. now the ECU will start its dance "Da Da Da Retard timeing, Bo-wap, Bo-wap... ad fuel, wup-tee-dee do both, la la... la la"
WTF..... bo-wap bo-wap!
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  #41  
Old 08-22-2005, 07:31 PM
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Gas is an addictive topic .
It's been mentioned before, maybe without evidence, but in terms of you Mini-heads driving higher than 91, I've read that it's a waste; i.e., mileage and power not improved... the ECM just compensates without any bonus to car and driver. Is that true?
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  #42  
Old 08-23-2005, 06:53 PM
Rich.Wolfson Rich.Wolfson is offline
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Quote:
Originally Posted by 1FSTMINI
R u kidding?

Thats all there is around here.....I only see 89,91,93 octane all over NY and the tri-state area. or maybe im wrong.
I have been looking for the last three days around the New York/New Jersey metropolitan area. All I could find is 87, 89, 93 and Sunoco 94 no including the race gas places.

I can not find any branded gas with 91 octane.

But my original question still remains. Is it possible that the manual referring to 91 is on a different scale than the 89 commonly available here in the North East? And that 89 here is actually the 91 referred to in our manuals?

Rich
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  #43  
Old 09-07-2005, 09:20 AM
MiNiBeamer MiNiBeamer is offline
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I lent my 03' MCS out and he filled 2 tanks with 89 octane i always fill it with 93 it won't do anything in the long run will it aslong as i continue on with the 93?
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  #44  
Old 09-07-2005, 09:40 AM
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Quote:
Originally Posted by MiNiBeamer
I lent my 03' MCS out and he filled 2 tanks with 89 octane i always fill it with 93 it won't do anything in the long run will it aslong as i continue on with the 93?
You're fine. If you drive it hard with 89 octane, the ECU will retard the timing. I wouldn't recommend doing it on a regular basis, but aside from the lost performance until you refill with 93 octane... You're fine.

Beat your friend severely about the head and shoulders just for good measure.
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  #45  
Old 09-07-2005, 09:41 AM
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Quote:
Originally Posted by MiNiBeamer
I lent my 03' MCS out and he filled 2 tanks with 89 octane i always fill it with 93 it won't do anything in the long run will it aslong as i continue on with the 93?
No, everything will be just fine.
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  #46  
Old 09-07-2005, 11:33 AM
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Please stop this thread!

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  #47  
Old 09-07-2005, 12:38 PM
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Something to be concerned about these days is the reduction in fuel quality across the board. Some of you might remember our illustrious president (take that however you might) stating in a speech that he had 'authorized a rollback of the EPA Clean Air standards' in an effort to make more fuel available. In a nutshell, this generally means usage of a lower grade of fuel stock, cutting back on refinery steps and/or time, allowing a greater percentage of impurities in the fuel, etc. What it means to us is that the fuel coming out of a particular pump could possibly not be of the octane rating or general quality that you are accustomed to. If you notice reduced performance lately, this can be the case, even if you are using 91-93 fuel.

Just a thought.
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  #48  
Old 09-07-2005, 12:47 PM
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Quote:
Originally Posted by Mobster
Please stop this thread!
Why? What do you find objectionable about this topic?

The questions aren't to start an argument but to solicit feedback from a community member.

With the rising cost of gasoline especially over the last two weeks this has been a frequent question asked here on the boards. This topic as well as one over in First Gear was stuck to the top of the forum so that those who are considering a shift to a lower grade of gasoline can get the information they seek without feeling the need to start a new thread on the subject.

Plus as you can see there appear to be many questions regarding suitable fuel for use in the MINI...

However if the membership of NAM has credible concerns over the viability of these discussions, feel free to PM me to discuss it further. For the time being however there's nothing in this thread that is a violation of any of the NAM Site Guidelines plus it appears to be assisting members... so the thread stays...
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  #49  
Old 09-07-2005, 09:22 PM
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... and it continues ...

The issue of fuel quality was raised earlier. Does anyone know which brand(s) have the best quality fuels? What about Sam's Club gas? That's what I get. Is this stuff cheaper but of lower quality?
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  #50  
Old 09-08-2005, 04:52 AM
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Quote:
Originally Posted by Greatbear
Something to be concerned about these days is the reduction in fuel quality across the board. Some of you might remember our illustrious president (take that however you might) stating in a speech that he had 'authorized a rollback of the EPA Clean Air standards' in an effort to make more fuel available. In a nutshell, this generally means usage of a lower grade of fuel stock, cutting back on refinery steps and/or time, allowing a greater percentage of impurities in the fuel, etc. What it means to us is that the fuel coming out of a particular pump could possibly not be of the octane rating or general quality that you are accustomed to. If you notice reduced performance lately, this can be the case, even if you are using 91-93 fuel.

Just a thought.
OH NO! GWB is going to ruin my MINI!!:impatient
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