i just picked up my 07 ML 350 about 20 mins ago and the dealer state to use PREM. gas..now does it really make a diff.??? if i were to use unleaded and prem. everynow and then?
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Yes it does, i u use lesser quality gas, u'll start hearing random sounds from the motor, lessen performance, and significantly reduce the life of ur engine.
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2008 GL450 Black/Macadamia, Premium 2 package, Full leather package, DVD entertainment system, Running boards, Voice Control, Trailer Hitch, 6 Disc CD-changer, Illuminated Door Sills, Ipod Integration, Keyless-Go, SLEEK TRUCK! HAULS ASS!
Yes, the dealer will charge u if the correct procedures weren't taken, if u don't service it, don't fill the proper gas then u will be charged for and damages caused.
just cough up the cash for the better gas - if you study how it actually works, the higher octanes actually allow for better fuel efficiency, which is why even in cars that don't require premium (i.e. my jeep) I still fill it in - it probably all works out in the end price wise, but I get an extra day or two out of my fill-ups.
thinkman is right - you gotta do what they say, if your engine goes dead and you get it towed to the stealership, they won't replace it under warranty if you filled in regular gas and that's what messed it up.
I don't see how one can think that running the cheapest and worst gas (out of the selections) is O.K. for a car from one of the most prestigious car companies in the world. Not to mention a brand new one at that.
Lease or not, you chose a Mercedes. You should have expected it to use Premium.
Since this is my first Mercedes, I have put Premium Gas into it. When I owned an Acura I would mix the fuel when the prices got too high over the summer months. I didn't have any issues with it and verfied with my dealer if it was okay. If I knew more about the Mercedes Engine (ie, is it a Chrysler Engine or purely a made by Mercedes engine) I would try the regular gas.
Acura's onboard computer used sensor technology to check the oct lev in the tank (really cool feature BTW).
The other thing you could do is try it for a week and see what happens. Again, it is a lease
Since this is my first Mercedes, I have put Premium Gas into it. When I owned an Acura I would mix the fuel when the prices got too high over the summer months. I didn't have any issues with it and verfied with my dealer if it was okay. If I knew more about the Mercedes Engine (ie, is it a Chrysler Engine or purely a made by Mercedes engine) I would try the regular gas.
Acura's onboard computer used sensor technology to check the oct lev in the tank (really cool feature BTW).
The other thing you could do is try it for a week and see what happens. Again, it is a lease
If I understand it correctly, there are anti-knock sensors in the engine, and if the incorrect octane fuel is put in, it will retard the timing even further. Just because the engine can adjust to the lower quality of gas doesn't mean it's okay to do it.
I also don't see how you can wonder if it's a Chrysler engine...
Just because the engine can adjust to the lower quality of gas doesn't mean it's okay to do it.
What exactly ISN'T O.K. asianml?
I put 75K miles on my ML320 and NEVER used premium fuel. Almost always I used mid-grade [octane level 89] and in fact several times [mostly inadvertantly] I used regular [octane level 87]. Never did I have an operational nor maintenance problem and my gas mileage was always at the upper end of the spectrum [17 mpg city/20 mpg hwy]. Do you really mean to say that if I used premium fuel my gas mileage would have increase 10% from these levels [I don't think so]?
If MBZ recommends fuel with a minimum octane level of 90 and in California mid-grade fuel has an octane level of 89 [plus a whole lot of other additives which I am sure aren't what MBZ had in mind when it designed the ML], what exactly is the harm assuming no engine pinging?
Don't you find it ironic that octane levels are noted in odd number multiples, yet MBZ recommends an even number octane level for its vehicles?
And don't you find it ironic that MBZ recommends the same premium fuel for all MLs regardless of engine size, number of cylinders or compression ratio?
And doesn't elevation have a bearing on octane levels so maybe an octane level of 87 at 6,000 feet, operationally wise, is equivalent to one of 91 at sea level?
I'm cetainly no expert here but I personally think this whole premium fuel thing is hype. If your ML seems to operate correctly, doesn't ping and registers 25 mpg on the highway per the onboard computer [as does mine], what exactly is the harm to using mid-grade fuel?
I always thought MB recommended using a minimum of 91 octane. There's always the exception to the rule. I'm not saying I'm wrong, but I'm not saying I'm right.
Put yourself in the OPs shoes for a minute here. How much will you really save by using regular gas for only 27 months?
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