ML400 after 1k km ......
3L turbo
It is soft start - same as an average mercedes, but the 3L turbo is amazing that outruns my highly modified 3.5L W164. I have plugged the sprint booster that much improve the soft start issue / fuel pedal response.
Brake system
The brake performance surprises me. In the old days, I had high requirement on the brake, and mostly I need the disc and pad upgrades, in particular for a heavy SUV like this. This is the first time ML400 gives me the outstanding braking power

Suspension and 18" wheels
I believe it is same W166 suspension as 3.5L. It is much improved than w164. Though not as good as the high performance suspension, it is comfortable and not much to worry when I overspeed at the curve sometime by mistake

Mods
The factory engine oil felt as diluted as water. I replaced the factory oil with the shell oil as soon as the car landed.
Sprint booster installed to improve fuel pedal response
Looking for 19-20" wheel upgrade (pls let me know if any good suggestion)
Also, winter is coming around where I live so I am buying an AMG replica 20" set. They only cost a fraction of oem AMG wheels so you could consider something like that. Just go on ebay and search 20" AMG and you will get a lot of results. Good luck.
W
I'd rather use the sticky oil 5W, rather than the factory oil to give extra protection. That worked with my 10-yr old w164 without oil leaks.
I used sprint booster on my w164, c coupe, and now w166. All work great. It behaves like giving you extra torque, but in fact it makes the fuel pedal accelerate the response or shorten the delay. It has three modes - off, normal, aggressive that you can switch any time you want.
Trending Topics
These people debated oil changes like you would not believe. They would send oil away for analysis, change oil incessantly, tranny fluid, oil brands, which lab to do the testing...it went on and on and on.
Having come to that board from the ML board here, I was surprised that people devoted so much time to second guessing the engineers of such a sophisticated power plant.
Here it's just "service A" and "service B" as needed...
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