There is only one BMW OEM coolant, the BMW radiator anti-freeze and anti-corrosion agent. Therefore, either the product designation BMW LC 87 (Lifetime Coolant 87)
Oil is used in an engine to lubricate its moving parts. As the oil circulates in the engine it picks up rust, metal shavings, and dirt. The oil filter removes this debris from the oil to prevent engine wear caused by these foreign particles, keeping the oil in the engine clean.