Introduction

This guide applies to later style turbo diesel engines that have a translucent plastic overflow tank for observing coolant level.

Image 1/1: Find the tank, it will be on the passenger's side under the hood forward of the battery.
  • Checking coolant level is simple of the turbo diesel cars because of the translucent overflow tank.

  • Find the tank, it will be on the passenger's side under the hood forward of the battery.

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Image 1/1: Note the arrow that points to a line at about the mid-point of the tank. This is the level the coolant should be at.
  • Now get down low and have a look at the front of the tank.

  • Note the arrow that points to a line at about the mid-point of the tank. This is the level the coolant should be at.

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Image 1/1:
  • If your coolant is low, top it off with a mix of about 50/50 distilled water to coolant. Only use a proper coolant for these cars, either the Genuine Mercedes coolant or one that is specified and formulated for the application.

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Conclusion

If your coolant is low, top it off only when the engine is cool!

Nicolas Siemsen

Member since: 12/06/2013

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One Comment

It's also a good idea to check the color of the coolant. Very dark or sooty coolant may indicate engine oil is getting mixed into the coolant due to a blown head gasket, or more seriously, cracks in the engine block.

Noshtzy - Reply

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