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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...
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.
1999 ML320 230K miles
2003 Lexus GX470 285K miles
2001 ML320 162K miles
1980 280SE EURO W126 156K miles 142mph top speed SOLD
1984 300D TURBO DIESEL W123 SOLD
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.