My engine light comes on, and then will go off after a day or two. I suspect the gas cap could be the cause. Although the cap is only a year old.
Is there a better aftermarket cap for a W210?
Am I correct to assume that the sporadic operation of the light is most likely caused by a slight leak in the cap seal?
The car is a 97 E420.

__________________
2008 S550
2010 GLK350
1997 E420 (retired)
2005 CLK500 (retired)