Engine oil Fiat 500X 55258159 (1.3 MJET) — viscosity and approvals

Which engine oil for Fiat 500X 55258159 (1.3 MJET, 2014–2023) — viscosity, specifications, capacity and change interval.

Engine Specifications

Recommended Oil

Change oil when either condition is reached — mileage OR time. Never exceed both limits simultaneously.

Approved Oil Brands

Selenia Diesel Multipower 5W-40 / Castrol Edge 5W-40

How to Choose Oil for 55258159

1. Viscosity must match specification — using the wrong viscosity grade is not acceptable. Only 5W-40 is approved for 55258159.
2. Check the approval code on the label — the can must show Selenia Diesel Multipower / ACEA B4 compliance. Regular oil with an incorrect approval may damage the engine.
3. Volume — when changing with a new filter, you need 4.3 L. Check the oil level with the dipstick 5 minutes after filling.
4. Do not mix grades — if topping up, use the same viscosity and specification.

Consequences of Using the Wrong Oil

• Oil with a wrong approval for a diesel engine can clog the DPF filter (diesel) or cause excessive oil consumption.
• Too thin oil (e.g. 10W-40 instead of 5W-40) accelerates timing chain/belt and crankshaft bearing wear.
• Too thick oil makes cold starting difficult and increases fuel consumption.

Domande frequenti

What oil goes in a Fiat 500X 55258159?

Viscosity 5W-40, approval Selenia Diesel Multipower / ACEA B4, volume 4.3 L. Recommended brands: Selenia Diesel Multipower 5W-40 / Castrol Edge 5W-40.

How often to change the oil in Fiat 500X?

Every 15 000 km or 12 months — whichever comes first. With heavy city driving or short trips, every 7,500–10,000 km.

How much oil does the 55258159 take?

4.3 litres with a new filter. Before ordering, double-check — some 500X variants with the same engine code may differ by 0.2–0.5 L.