Codger49
MB Enthusiast
- Joined
- May 21, 2015
- Messages
- 1,686
- Location
- South Kent
- Car
- W209 CLK500, W168 A190; E46 325i; SPA2 XC60
I understood the 15 year coolant life for MB vehicles post circa 2002 came from a additive package (silica gel) being placed in the coolant reservoir when manufactured. After the 15 years, its back to normal coolant life of two to three years.