2001 ML270 CDI - what percentage of coolant to add to top up header tank?

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Penelope Walton - 01 Dec 2007 07:48 GMT

Is someone able to tell me what ratio of coolant /water I need to add to my
header tank to top it up? The service manual states that 50% anti
free/corrosion inhibitor should be added so I am assuming the other 50% is
water - it doesn't explicitly say this. Also, does this need to be distilled
water?

Thanks in advance,

Penny.

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Tiger - 01 Dec 2007 13:43 GMT

Yes, that's right... 50% coolant and 50% water... distilled water preferred.

Nowdays, they are selling premixed coolant because they handled the water in
different way... easy to use and cost about the same... meaning 1 bottle of
pure coolant = 2 bottles of premixed (slightly more $).

In US, Zerex G-05 is what MB use... but on some newer MB car, I am seeing
green coolant... so see what you have... they are both interchangeble... I
prefer the Amber colored G-05 over anything else... in personal experience,
far superior.

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Penelope Walton - 02 Dec 2007 00:26 GMT

Thanks very much for that, Tiger.

I purchased the Mercedes coolant at AUD$22.00 which is not premixed with
water and used 50% coolant and 50% water to top up

Cheers,

Penny

> Yes, that's right... 50% coolant and 50% water... distilled water preferred.
>
[quoted text clipped - 6 lines]
> prefer the Amber colored G-05 over anything else... in personal experience,
> far superior.

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