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Common rail diesel engines require some extra maintenance to keep them running smoothly. Terrain Tamer’s Alan Gray gives us the low down on what you can do to improve the reliability of your common rail diesel engine.

Few people know 4WDs as well as the tireless Allan Gray, and he has plenty of valuable wisdom to pass on: This has got to be an incredibly valuable nine minutes, and could save you thousands of dollars and stop you having some major problems on your next trip.