Pennzoil Conventional motor oil is available in 10W-30 and 5W-30 viscosity grades, recommended for all engines requiring the matching SAE viscosity grade engine oil. This quality motor oil can be mixed with other synthetic and mineral oils. Active Cleansing Technology cleans up to 40% of engine sludge in the 1st oil change and continues cleaning through the 2nd oil change. The 5W-30 grade is specially formulated for use in high or low temperature conditions.