for Petrol engines:

Synthetic Based oils GRADE 5W-40 Fiat 9.55535-m2Qualification

original oil:
Selenia K

Oil for Diesel Engines:
Synthetic Based oils GRADE 5W-40 Fiat 9.55535-N2Qualification

original oil:
Selenia WR

and in the foot notes..

"If using non original SAE 5-W-40 Products, Oils with a minimum ACEA A3 Specifications for petrol Engines and ACEA B4 specifications for diesel engines are admitted; In this event top engine performance is not guaranteed.

Use of products with low-quality properties than ACEA A3 and ACEA B4 could cause damages to the engine that are not covered by the warranty"

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