0w40 oil

0w40 engine oil an oil combines fluidity when cold and very high safety at high temperatures

A 0w40 engine oil makes it possible to make the "big gap" between great fluidity when cold (grade 0w) and a fairly high viscosity when hot (grade w-40)
An SAE 0w-40 oil is particularly interesting for engines which tend to dilute the lubricant such as on petrol Porsches or on Diesels equipped with particulate filters (DPF) whose regeneration leads to degraded combustion by delayed injections in order to increase the temperature of the DPF which therefore leads to a dilution of the oil by the diesel.