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When indulging in a little " whats under this cover then" on the Ampera i bought a few weeks ago i discovered a bottle of "Universal Antifreeze" with about 1/2 litre used. I decided it would do harm to change the coolant in all three systems. Changing the ICE coolant involves running the coolant pump when refilling. Can this be done with a VCX Nano and GDS2 and if so how?
 

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Ampera aka IGOR
Tesla Model 3 P
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It is meant to be Dexcool that is used in the Ampera. A 50/50 premixed solution. On one/all of the systems has to be done using a vacuum method. Others on here have suggested changing a little from the top of the expansion tanks on a regular basis so eventually, the original coolant is less and less in the system but not entirely removed. Be wary of using 'Universal' Antifreeze'.
 

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You must only use premix Dexcool in the HV battery coolant system. Dexcool has deionised water which acts as an insulator in case of an electrical fault within the battery.The HV battery is 400v and you do not want 400v in your vehicle chassis.There are built in safeguards against this but better to comply with the spec.
It is difficult to completely empty and the refill the system without leaving airlocks in the battery. It is best left to a dealer equipped with correct vaccume systems. Coolant has to be replaced in the 5 yr service to maintain the battery warranty.
The best way is as h8ten said replace a little at a time over several months.
 
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