2025-01-15 · 5 min read
Proton X90 Coolant Malaysia
X90: Geely/Proton long-life coolant. First change 5 years/100,000 km, then every 3 years. 48V mild hybrid: larger cooling demand. Malaysia cost.
- OAT or Geely coolant; every 2 years or 60,000 km; also check 48V cooling loop annually
Coolant Type — Proton Models Malaysia
Older Proton models (Saga/Persona) accept universal OAT coolant or Proton genuine coolant — avoid plain water, which promotes rust in the aluminium engine. X50/X70/X90 Geely-sourced engines require OAT or G12+ coolant that is compatible with aluminium components. Never mix green conventional coolant with OAT/G12+ as it causes gel precipitation. In Malaysia's heat, check coolant level monthly.