So as not to damage some engines while benefitting others, six different C oil types are outlined by the ACEA. C1 and C4 are categorized as low-SAPS oils, while C2, C3, C5, and C6 are considered ...

Azzopardi also pointed out that the ACEA regularly updates its oil standard guidelines, so if you're interested in performing your own oil changes, you may want to stay on top of the latest news.