I am with Mark - the Mobil 1 gets changed at 3k miles on the C230. The Fossil oil in the 300E is changed between 2500-3000 miles.
2003 Firemist Red/grey leather SL 500
2015 Palladium Silver/black mbtex GLK 350
1987 Smoke Silver/burgundy mbtex 300E Sportline (SOLD)
Click to see 87 300E