Engine Coolant Mixing

WARNING: This page is about a different variant/trim than selected.

If a vehicle is found to have the incorrect coolant, drain and fill the coolant system using the procedures in ElsaPro.

Using the chart below, determine if the vehicle has the correct coolant. If a vehicle is found to have the incorrect coolant, drain and fill the coolant system using the procedures in ElsaPro.

Mixability of G12_evo with other Coolant Generations

Fig 1: Coolant Mixture

NOTE:

If a vehicle is found to have the incorrect coolant, drain and fill the coolant system using the procedures in ElsaPro.

Coolants can be mixed, as described in the chart, but it is always best practice to change the coolant due to reduced corrosion protection when coolants are mixed (exception: G12++, G12evo, and G13 are fully compatible).

Only mix distilled water with coolant additives per ElsaPro.

WARNING:

Drained coolant must not be reused.

NOTE:

When the coolant is changed due to a cooling system issue, the cooling system should be drained using the Service Information procedures in ElsaPro and refilled with water.

Then, run the engine for 15 minutes with the heater on to remove any residual coolant.

Final step is to drain and fill the system to the freeze protection ratio listed in ElsaPro.

Cooling system drain and fill due to coolant mixing, or incorrect coolant, is not covered by Warranty.

Reference TSB 2025303 for more information.