Practice question

Engine oil that appears milky after a ride on a liquid-cooled motorcycle most strongly suggests:

  1. Perfectly normal fresh oil appearance
  2. Too much air in the tyres
  3. A broken clutch cable only
  4. Coolant contamination of the oil, often from a head-gasket or cooler leak path

Answer: D — Coolant contamination of the oil, often from a head-gasket or cooler leak path

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