What grade of engine oil should be used for Citroen C5?
1 Answers
Citroen C5 uses engine oil with the specification 5W40. Below are the detailed introductions of engine oils: 1. Mineral oil. It is refined from crude oil, usually with low cost. However, as mineral oil base is prone to oxidation, various imported additives are added to mineral oils, and their service life is about six months. 2. Semi-synthetic oil. The refining cost is high, but it has good oxidation resistance and is a quite good long-lasting engine oil with a service life of about twelve months. Considering the balance between price and quality, semi-synthetic oil has the widest application range. 3. Fully synthetic oil. It is a chemically synthesized engine oil that can maintain lubrication even when the base oil fails.