I have been driving Diesel M-B's for thirty years and have tried nearly every additive that has been introduced to the market in that time. Redline is the best of the lot, and has reduced smoking, knocking, and clatter noises from my cars over the years, while improving mileage.

The event you described sounds pretty normal for a Diesel to me. When you tromp on the gas pedal and run the car up maximum rpm, you tend to blow the accumulated carbon deposits out, and while you are speeding up, the mixture tends to be a little on the rich side, contributing to the generation of smoke. If you do this on a regular basis and the car made more smoke with the Redline in it you may be seeing some added benefit of Redline cleaning out the more stubborn deposits. Under more normal conditions it has been my observation that Redline reduces smoking.

I have also noted my Diesels seem to accelerate faster when I "lead" the engine with the gas pedal, rather than floor it. By this I mean there seems to be a gas pedal postion for a given rpm and load that gives an optimum response, and it is usually not the "floored" postion. By maintaining this optimum position of the throttle I get less smoke and noise, and at least the same if not better acceleration. I have also been known to floor the car to smoke out people riding my bumper and get them to back off.

Jim

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Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)