Hello,
I guess the coolant debate continues.......
I have a 1 gallon of MBZ Coolant in front of me, part number
Q 1003 0002 it is comprised of, the following ingredients:
Ethylene Glycol (107-21-1)
Diethylene Glycol (111-46-6)
Sodium Tetaborate (1303-96-4)
Sodium Benzoate (535-32-1)
Corrosion Inhibitors, Defoamers, Silicates, and Dyes

Made in U.S.A. for MERCEDES-BENZ OF NORTH AMERICA, INC.
MONTVALE, NEW JERSEY 07645
Q 1 03 0002

It is orange, and Corresponds to MB Specifications for
Service Product Sheet No.325.1

On the bottle it says Replace coolant solution every three
(3) years. Also, MB anticorrosion/antifreeze may only be
mixed with other manufacturer's agents provided that they
have been approved by MBNA.

The other thing that constantly amazes me is that to save
a few bucks considering the cost of MB engines and parts
that any one would use anything else.

BTW, This bottle costs about 12 bucks plus tax. Got it from
my local auto parts store.

Gary