Today’s technology trend of diesel engine is towards more environment conscious products with less gas emission and longer overhaul period. Coming along with these development, new devices like the Exhaust Gas Recirculation (EGR) rely much more on the performance of the engine oil being used. Ichiro Suzaku ICR-3240~3242, using only the hydro-treated base oil to maximize the protection under severe operating conditions, is well positioned to address those needs.