Helps control LSPI (low speed pre-ignition) in today's turbo charged engines  Exceptional service in gasoline, diesel and turbo-charged engines Engineered to keep your engine clean, rust-free and protected against corrosion, foam and the formation of carbon, sludge and varnish Great thermal stability to protect...

Castrol GTX ULTRACLEAN with its proprietary sludge buster - is our cleanest GTX ever 50% superior sludge protection compared to tough industry standards* Advanced protection against viscosity and thermal breakdown Superior protection against high-temperature deposits Premium quality base oils and anti-wear additives that help...