2003 Volkswagen New Beetle Convertible "engine oil chocolate colour" Questions

engine oil on a can, and check the colour. If it will look like chocolate brown, then you do have a leak from the inside. can only be contaminated diesel (water, petrol).replace the fuel filter, purge

...engine oil. Pull the oil dipstick and check the condition of the oil. If it looks a bit like chocolate milk and not just normal oil colouring you have coolant in there. Also check the radiator cap ...