Superior soot protection to help extend diesel engine life .

Castrol EDGE 5W-30 A3/B4 is a full synthetic, SAE 5W-30 engine oil formulated for highly tuned four cylinder and latest technology engines Castrol EDGE 5W-30 A3/B4 with unique Titanium Fluid Strength Technology gives you the confidence to demand maximum engine performance from today\'s highly tuned four cylinder and latest technology engines, operating with tighter tolerances, requiring lower viscosity and stronger oils for variable service intervals. Castrol EDGE is tested to its limits.

Application:
Castrol EDGE 5W-30 A3/B4 should be used in engines where maximum efficiency and protection is demanded. Castrol EDGE 5W-30 A3/B4 is suitable for use in automotive gasoline or diesel engines* where the manufacturer recommends an ACEA A3/B4, API SL/CF or earlier specification 5W-30 lubricant.