Coolant change question?

Hey all,

quick question regarding a coolant change I just did on my 2013 Hyperstrada.

Following the service manual I drained and refilled the radiator and reservoir with Prestone 50/50 cor-guard Coolant. Which is an ethylene glycol based coolant.

Now I spent a little too much time reading about coolant mixing horror stories online and realized now after completing the job that I maybe should have done a flush with some mild vinegar water to remove all of the old coolant. Is this something I need to worry about? From what I can tell the original coolant is pink AGIP which is also Ethylene glycol based so I should be fine, correct?

Would hate to waste a perfectly good coolant change over a non issue. So thought I'd check in here before I rush and do a complete flush.

kuksul08 said:

Because Ducati may or may not have used a particular metal alloy on our engines they are sensitive to the coolant you use. I would personally stick with the AGIP.

Click to expand...

I saw this but was confused as AGIP is ethylene glycol based. And the service manual recommends "SHELL Advance coolant or Glycoshell" Both ethylene glycol based coolants.

Did a little more digging and found this was only an issue related to the Multistrada 1200


Quote below is from another Ducati forum

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Posted Yesterday, 07:55 AM
OK here's the response from Andrea Forni - yes he replied, wow!


Mr. Bannister, good afternoon.
Sorry for the delay in this answer.
I guess you are referring to my interview appeared on "ashonbikes", that I report here :

There seems to have been an unusual number of cylinder head failures, can you tell us anything about this?
"Yes, there have been some problems with coolant escaping into the lubricating oil. This was caused by an unexpected internal corrosion problem caused by glycol-based anti-freeze. We have changed the anti-freeze specification to a non-glycol one and this has cured the problem. We now recommend a non-glycol anti-freeze for all existing Testastretta engines."

If so, I would like to clarify some statements that could be misinterpreted.
The above interview was related to Multistrada 1200.
Is a matter of fact that we faced a few cases of cylinder head corrosion on Multistradas. but other Ducati models (1198, Diavel, Streetfighter) are not interested.
Too long to detail why, but this is what actually happened.
It's also true that the change of original anti-freeze to one with better anti-corrosion properties cured the problem (on the affected bikes, therefore on Multistradas).
It' undeniable that new anti-freeze has better anti-corrosion performances than older one.
Therefore, on assembly line, we shifted to the new one, and, for obvious standardization reasons, the new anti-freeze is now applied to all liquid cooled engines.
But your Diavel (as well as 1198, 848, Streetfighter, ecc.) does not need the replacement of anti-freeze before the expected normal service interval.
Of course, when you will perform the next scheduled service, we recommend you to use new one, but you are not required to do it as a sort of urgent action to prevent damages.
Finally, please let me clarify that the differences between old and new anti-freeze are basically the additives of the products, and not the base component that is still glycol.
The wrong statement was due to a my mistake in the interview, I apologize.

Hoping that I have clarified your doubts, please accept my best regards.

Andrea Forni
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