Castrol Edge 5w30. 2 months after purchace and running 5-20w I started noticing smoke on start up. Castrol 03087 EDGE Extended Performance 5W-30 Advanced Full Synthetic Motor Oil 5 Quart 12716 2747 Mobil 1 103469-12PK ESP Formula 5W-30 Motor Oil - 1 Qt Pack of 12.
Recently switched to 5w-30. I started running Mobile 1 synthetic oil immediatley. The switch from 5w30 in 1999 to 5w20 in 2001 on identical engines had nothing to do with wear or reliability issues and everything to do with Ford saving a few bucks by meeting CAFE standards.
2 months after purchace and running 5-20w I started noticing smoke on start up.
Up to 4 cash back Warranty Details 30 DAY REPLACEMENT IF DEFECTIVE Castrol EDGE with Fluid TITANIUM Technology is Castrols strongest oil and the natural choice for drivers who want the best combination of sludge protection wear protection and maximum engine performance. Castrol EDGE Euro Car fluids are engineered with Fluid TITANIUM Technology to transform under pressure increasing its film strength to prevent oil breakdown and reducing friction to unlock maximum engine performance. 2 months after purchace and running 5-20w I started noticing smoke on start up. 0W-16 0W-20 5W-20 5W-30 5W-50 10W-30 10W-40 0W-16 Castrol EDGE 0W-16.