PETRONAS Arbor Alfaprime Synth 10W-40 is a low SAPS oil that is suitable for Tier 4 heavy duty diesel applications including modern, high-output, low emission engines fitted with emission control systems using DPF, SCR, DOC and EGR technologies. It is also suitable for older turbocharged and naturally aspirated diesel engine generations running on high or ultra-low Sulphur diesel and bio-diesel.