Optima C3 LSG 5W-30 is a fully synthetic SAE 5W-30 low SAPS multigrade oil primarily designed for use in Vauxhall cars and vans but also suitable for use in a wide range of other petrol and light duty diesel engines. Low levels of sulphated ash, phosphorus and sulphur make Optima C3 LSG 5W-30 compatible with diesel particulate filters.