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  #1  
Old 03-25-2011, 03:26 PM
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Default how to improve gas mileage ML350

I live in a city /suburb with hills and lots of stop signs.
My city mileage is terrible- around 15 mpg
On the highway I get 22 MPg

any tips? I use the middle grade gasoline
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  #2  
Old 03-25-2011, 05:17 PM
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Hi, My ML350 does alot of coasting down hills and I try to keep the speed to 45MPH on the country roads. Not saying the mileage is that much better than you get, but, my hubby put clean air filter on , hope it improves..... In Ohio the weather is on a warm up soon.... No air on this summer...
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  #3  
Old 03-26-2011, 11:30 AM
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Quote:
Originally Posted by hlsess View Post
I use the middle grade gasoline
Your vehicle requires premium fuel. Do not use less than 91 octane.

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  #4  
Old 03-27-2011, 08:02 AM
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My car salesman said it was OK to use the middle grade- I'll use premium and see if it helps
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Old 03-28-2011, 03:42 AM
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Quote:
Originally Posted by hlsess View Post
My car salesman said it was OK to use the middle grade
Yes, because they're some of the most honest and trustworthy people around....
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Old 04-07-2011, 09:39 AM
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I'm not sure about 350 engine but since January, I have switched back and fort between the premium 91 and lowest 87 grade that Costco (Amoco) offers.
My car is idling much smoother on 87 octane and I'm getting exact same mileage out of both grades, around 260 miles per 16 gallons of fuel.
Maybe same "engineer" was writing the manual to use the premium only, who also suggested not to change the transmission fluid because it is a lifetime fill !
In my old 280, I could see and feel the gas difference in gasoline grade and in 10 years, I used premium Shell only.
Bernard
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1999 ML320 211K miles
2003 Lexus GX470 272K miles
1999 Chrysler LHS 86K miles
2001 Chrysler Concorde 71K miles
1980 280SE EURO W126 156K miles 142mph top speed SOLD
1984 300D TURBO DIESEL W123 SOLD
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Old 04-07-2011, 09:46 AM
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Ah so you, a typical owner, knows better than a multi-million dollar company's engineers. Sure.
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Old 04-07-2011, 08:42 PM
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Default M-p-g e-t-c

Has anyone used 4x4 adapter to put a stick in a 300SD?
Way back they used to have free-wheeling in some cars.
I drove a 54 ford with free wheeling. I got great MPG.

Anyway back to the stick. In other car, a beetle 1.9 diesel stick, I roll in neutral great distances when traffic is slow. Basically, I idle a lot. It significantly improves MPG. Going 2nd to 5th helps too.

Seems like a 300SD stick could benefit. Plus be a ton of fun.

I'm new to this forum. Used to just drive my MBs, and played with the others.
Now interested a little tweaking in the MB world.
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Old 04-08-2011, 02:23 PM
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Quote:
Originally Posted by ForcedInduction View Post
Ah so you, a typical owner, knows better than a multi-million dollar company's engineers. Sure.
Yes, a typical Mercedes owner could be also an engineer with higher education and more experienced then any of them working for Mercedes. Why not?
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1999 ML320 211K miles
2003 Lexus GX470 272K miles
1999 Chrysler LHS 86K miles
2001 Chrysler Concorde 71K miles
1980 280SE EURO W126 156K miles 142mph top speed SOLD
1984 300D TURBO DIESEL W123 SOLD
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  #10  
Old 04-08-2011, 02:42 PM
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Quote:
Originally Posted by hlsess View Post
I live in a city /suburb with hills and lots of stop signs.
My city mileage is terrible- around 15 mpg
On the highway I get 22 MPg

any tips? I use the middle grade gasoline
Why not send it for dynatuning, you will have better performance and fuel consumption?
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Old 04-08-2011, 02:42 PM
 
 
 
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