Protect your car from harmful sludge with Castrol GTX 10W-40 A3/B4 which contains anti-sludge formula that provides 25% better sludge protection compared to tough industry standards.* Castrol GTX provides 25% better protection against sludge than the latest industry standard. Liquid Engineering protects against problems that your engine faces every day. * vs API SL &/or ACEA A3/B4 Industry standards APPROVALS & SPECIFICATIONS SAE 10W-40 ACEA A3/B3, A3/B4 API SL/CF MB-Approval 229.1 Fiat 9.55535-D2 VW 501.01/505.00
