Power Up Semi Synthetic 10W-30 SN/CF series actively protect the life of your vehicle and prolong the lifetime of the oil change compared to Economic series. It is yet far the most updated API grade. Severe driving conditions can cause the buildup of thick, tar-like substance called sludge. Sludge can block your engine’s vital oilways like cholesterol – and if untreated it can rob an engine of power, and ultimately, its life. Power Up Double protection formula cleans away old sludge and protects against new sludge formulation better than tough industry standards. Power Up’s proprietary additives make SN series one of the most advanced conventional oils, help protect the life of your engine with Power Up. Great for old and new vehicles.