prezgully21

The reservoir currently has a yellowish looking cool I ordered from the dealer when it came it was blue I'm not going to mix but would like to know what antifreeze would be safe to mix in there being that its yellowish an all help me please

N_Jay

It should; be blue.


Someone changed it to generic coolant.
Usually this is not a problem as most coolants today are decent, but I don't like mixing them especially if you are relying on their "Long Life" properties.


If it is not too low top up with distilled water, then change back to MB blue at the next service.

alx

Your truck requires a specific coolant. The factory fill is yellowish and you are advised to retain color for easy visual diagnostic. You can obtain it from the dealer or from your friendly Napa store under the name of "zerex g-05".

N_Jay

Where did you get that info from?


I have only found references to the factory fill being MB blue fluid.


G-05 is a suitable aftermarket replacement. (yes, it is yellow)


http://bevo.mercedes-benz.com/bevolisten/325.0_en.html

lkchris

My 2007 came from factory with yellow coolant.

Coolant life according to MB is 15 years.

N_Jay

I am about 99% sure mine is blue like my '07E, but now I am going to have to look.
(Well, at least it gives me a reason to go down to the garage and put the charger on the GL since it has been sitting for several weeks)
Not that it would be like MB-USA to put in a fluid different from MB-GER for no reason other than to confuse the market.


EDIT:
Went out and looked, Well I'll be damned. It is yellow.
Seems MB lied about the factory fill.


Guessing that MB-USA decided to buy Zerex G05 because it was the same spec and cheaper than MB-Blue.

lkchris

MB yellow predates MB blue by decades.

N_Jay

Is (old) MB yellow the same as the Zerex-G05 (and current MB blue)?


My 07 E is Blue and my 08 GL is Yellow (hopefully Zerex-G05)