tonyleggs

98 c280 upper radiator hose broke, i duct taped the hose and filled with tap water to get home. i replaced the hose and filled up with Prestone. now i am hearing how bad Prestone is and what rst damage can occur by using tap water. Do i need to flush and replace? thanks

ptcruiser

They recommend distilled water.
I understand the principal reason, but not too many gas stations have it at the pumps :-)
I use a HOAT type anti freeze by choice.
Read this
http://www.mbca.org/sites/default/fi...reedec04_0.pdf

ECSTuning

tonyleggs,

The cooling system in your Mercedes-Benz should be flushed and re-filled every two to three years. Use only genuine Mercedes-Benz coolant or Zerez G-05, as these are the only two coolants that are approved for the engine in your car. Also, you should only mix coolant with distilled water in order to keep minerals, which may cause a build-up and corrosion, out of the system.

We offer the correct coolant for your car on our website. You can get to it by clicking HERE, or by clicking on the photo of the coolant below.





We also offer this Coolant Evacuation Tool Kit so that you can re-fill you cooling system without airlock issues.

You can get to the Coolant Evacuation Tool Kit by clicking HERE, or by clicking on the photos of the tool below.





If there is anything else I can help you out with, please feel free to post or send a PM!

aquinob

Definitely flush it when you can and use the z05 antifreeze and distilled water, both of which can be bought at places like walmart or you local parts store. Doubt you have any real damage to the system in a short time.