Proton X90
Coolant capacity & service interval
Proton X90 uses coolant with a capacity of 6,5 liters. The data covers 1 configuration.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| X90 1.5T (2023- ) |
|
Additional Notes
- The Proton X90 1.5T cooling system holds 6.5 liters of coolant, a capacity consistent with a turbocharged four-cylinder engine that requires adequate thermal management across the block, head, turbocharger circuit, and heater core.
- The 6.5-liter figure represents a full cooling system fill, meaning the total volume circulating through all coolant passages rather than a partial top-up quantity.
- The listed capacity applies under normal use conditions, which in coolant service terminology refers to standard operating environments as opposed to severe-duty cycles involving sustained high loads or extreme ambient temperatures.