i would never put a 'stop leak' product in any of my cars, MB or not. It thickens the transmission fluid and can cause internal failures (sticking valves etc.)....

my 2 cents....

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1987 300D, 212,000 miles
1997 Ranger, 300,000 kms
2004 Honda Civic Si - 110,000 kms. FOR SALE
2004 Mazda 3 Sport - GF's car, but it's my problem....

Montreal, Quebec - The Rust and pothole capital of North America!