Castrol introduces gtx extra that has a superior formulation, which offers complete protection to the car engine even under stressful city driving conditions. It provides an exceptional engine protection even at high temperatures. It is tested on international euro generation and mpf engines and is compatible with all cng cars. This oil offers a long-term catalyst protection. Castrol gtx extra is tested and suitable for all maruti, hyundai, daewoo, fiat, honda, mitsubishi, ford and hindustan motor cars as well as all imported petrol driven cars. It meets the api sg/cd, mil-l-461520 and ccmc g4/pd2 specifications.