FIAT 9.55550-HE2

The FIAT 9.55550‑HE2 specification defines the requirements for synthetic motor oil used in gasoline engines of passenger cars and cross‑overs from Fiat (e.g., 1.4 L MultiAir, 1.6 L Turbo, 2.0 L MultiJet). Oils approved under this standard must have a viscosity of 5W‑40 (or 0W‑40), meet ACEA A3/B4 and API SN/CF, exhibit high oxidation stability, wear and corrosion protection, and also contain low levels of sulfate, phosphorus and barium residues, ensuring compatibility with catalytic converters. The specification calls for long‑lasting operation at high temperatures (up to 130 °C) and maintenance of oil pressure under load, which increases engine life and fuel efficiency. For newer Fiat models that require enhanced heat resistance, the related approvals FIAT 9.55550‑AV5 or AV6 are often used, which remain backward compatible with the HE2 requirements. Using oil that complies with FIAT 9.55550‑HE2 guarantees compliance with the manufacturer’s warranty conditions and optimal engine performance.