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post #11 of 26 (permalink) Old 07-30-2010, 09:05 AM
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ooh, a gasoline grade thread . . .
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post #12 of 26 (permalink) Old 07-30-2010, 11:34 AM
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In myth#1, it said ...
What's a "myth" is the wishful thinking that Mercedes designed the car to "adjust" to regular fuel. Simply put--it didn't.

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post #13 of 26 (permalink) Old 07-30-2010, 06:05 PM
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Anybody ever try using 87 octane, but compensating by using one notch cooler spark plugs?

Please, no comments like, oh Mercedes engineers are all knowing gods and I shouldn't second guess them, or how I shouldn't mess with a $90,000 car, etc.... These are just machines, and I'm curious if anyone has ever tried using cooler plugs with 87 octane.
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post #14 of 26 (permalink) Old 07-30-2010, 07:14 PM
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Anybody ever try using 87 octane, but compensating by using one notch cooler spark plugs?

Please, no comments like, oh Mercedes engineers are all knowing gods and I shouldn't second guess them, or how I shouldn't mess with a $90,000 car, etc.... These are just machines, and I'm curious if anyone has ever tried using cooler plugs with 87 octane.
It's more like placing a bet of $10000 at a roulette table to win 20 cents a gallon.
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post #15 of 26 (permalink) Old 07-31-2010, 10:52 AM
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Originally Posted by jsap View Post
Anybody ever try using 87 octane, but compensating by using one notch cooler spark plugs?

Please, no comments like, oh Mercedes engineers are all knowing gods and I shouldn't second guess them, or how I shouldn't mess with a $90,000 car, etc.... These are just machines, and I'm curious if anyone has ever tried using cooler plugs with 87 octane.
It really is all about having problems with authority, isn't it?

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post #16 of 26 (permalink) Old 07-31-2010, 11:45 AM
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It's more like placing a bet of $10000 at a roulette table to win 20 cents a gallon.
Does your mother know you're on the internet alone? Btw, she says thank you for keeping your foam pad on your handlebar. Next year, you can upgrade your tricycle to a bicycle, with the banana seat and streamers just the way you like it.

Do you really think that these cars are delicate little flowers? Do you sleep at night with mercedes print pajamas and training pants?

Next time, follow instructions and don't write about things you were told not to.
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post #17 of 26 (permalink) Old 07-31-2010, 11:56 AM
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It really is all about having problems with authority, isn't it?
No, it's problems with the mob of mindless followers who pretend to be macho while wearing lacy mercedes embroidered panties.
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post #18 of 26 (permalink) Old 07-31-2010, 03:59 PM
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Against my better judgement

jsap:
Agreed that these things are basically just cars but .... The manufacturer's stated fuel grade requirement is there because of the engine design. There are some Benz that are happy to drink regular fuel but yours is not one. You may, of course do as you please with your own car but I see little advantage to go through all sorts of calisthenics to avoid using premium fuel. I'm sure it is not a cost issue, you are just interested in exploring your options. I have filled a half tank of regular in my 560SL when asleep at the pump and no disaster occured but I itched until it burned down enough to refill with the proper grade.

I think, despite the dire predictions of many, few can definitely tell us the long term result of using low octane fuel. However, the proper grade of fuel will simply eliminate one point of concern in the future.

I often disagree with lkchris but as much as it pains me to agree with him, he is right on this point.

If you do as you say, please post the results so we may add to the data base.

Last edited by rocky raccoon; 07-31-2010 at 04:01 PM.
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post #19 of 26 (permalink) Old 07-31-2010, 05:07 PM
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jsap:
Agreed that these things are basically just cars but .... The manufacturer's stated fuel grade requirement is there because of the engine design. There are some Benz that are happy to drink regular fuel but yours is not one. You may, of course do as you please with your own car but I see little advantage to go through all sorts of calisthenics to avoid using premium fuel. I'm sure it is not a cost issue, you are just interested in exploring your options. I have filled a half tank of regular in my 560SL when asleep at the pump and no disaster occured but I itched until it burned down enough to refill with the proper grade.

I think, despite the dire predictions of many, few can definitely tell us the long term result of using low octane fuel. However, the proper grade of fuel will simply eliminate one point of concern in the future.

I often disagree with lkchris but as much as it pains me to agree with him, he is right on this point.

If you do as you say, please post the results so we may add to the data base.
Thanks rocky for the conciliatory tone.

However, I'm puzzled. My question to the readers of this thread was, "has anyone ever tried it?" If not, then they really have no information to add, other than to repeat what everyone has been told my Mercedes.

So, I'll ask again, in the plainest English possible: If you have ever run 87 octane rating gasoline and compensated with colder spark plugs to reduce chances of pre-ignition, raise your hand. If you have not, I don't want to hear from you.
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post #20 of 26 (permalink) Old 07-31-2010, 05:47 PM
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I love people who place faith in any mythical miracle to save pennies on gas, oil, and other maintenance sundries, knowing perfectly well that will only lead to major car failure...

A car would show appreciation for preventive maintenance by never leaving his owner stranded.

Defensive Driving is never having to say you're sorry: a true love story between man and machine.
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