OIL TODAY VS. YESTERDAY

Today’s engine oils are not the same as they were even a few years ago.

Phosphorus and Zinc Reduction

• Phosphorus degrades catalytic converters
• Zinc & Phosphorus content unlimited before 1993
• Phosphorus now limited to max 800 ppm (API SM / ILSAC GF-4)
• Mandated for 10W-30 and lower – still occurring in higher grades
• Diesel oils now limited to 1,200 ppm Phosphorus (Oct. 2006)

Increased Detergents

• Exhaust Gas Recirculation Valves
• Increased drain intervals - less waste oil

Lower Sulfur

• Restricted Sulfur content