Dont know what button this is?
Also i put a full tank of premium unleaded petrol and i only got 410km out of it. Does this seem right?
Thanks
First time Merc owner
Fuel capacity for a 1988 US market model is listed as 23.8 US gallons plus 3.3 US gallons reserve = 27.1 US gallons total. 410km = 254 miles / 27.1 gallons = less than 10 miles per US gallon. If the reserve fuel capacity is not included, consumption would be 254 miles / 23.8 US gallons = 10.7 miles per US gallon. Something seems not 100% OK with the engine performance. Replace air filter, spark plugs and spark plug wires as a first step. Then it will require fuel system diagnosis such as air flow sensor, ignition module function, checking hoses for vacuum leaks, and more.
http://assets.mbusa.com/vcm/CAC_RAPM...60SEC%20OM.pdf






