Coolant for Tesla Model Y
The Model Y needs the same G-48 type coolant as the Model 3: ethylene glycol, phosphate-free. There is one difference: some newer Texas-built Model Ys left the factory with orange coolant. So on a Model Y you always check the colour in the tank first.
Look at the tank first. Model Ys built in Texas for North America from October 2024 carry orange HTF-LS coolant, which should not be topped up with G48. A blue tank takes G48.
Photographs come from the manufacturer's official materials.
Cooling system volume (litres) 13.5 to 18.4 litres from dry, depending on version
Blue, orange and LC100
- Blue tank: G-48. Zerex G48 is suitable, mixed exactly 50/50.
- Orange tank: HTF-LS, a Model Y built in Texas for North America from October 2024. Tesla advises against mixing it with G-48: thermal performance does not change, but the fluid turns brown and gets in the way of diagnosis. Do not top up with G48.
- Model Y from Gigafactory Shanghai: may carry blue LC100. According to Tesla's manual LC100 can be mixed with G48.
How much you will need
According to Tesla's service manual, a Model Y system fills from dry like this. The structural pack is the version where the battery forms part of the body.
| Model | Version | Litres, fill from dry | Zerex G48 bottles |
|---|---|---|---|
| Model Y | RWD, structural pack | 13.5 | 2 |
| Model Y | AWD, structural pack | 16.6 | 3 |
| Model Y | Conventional pack | 14.6 – 18.4 | 3 |
A partial top-up, for example after a pump or radiator replacement, often needs only one bottle. Mix the concentrate exactly 50/50 with distilled water.