SHELL Argina T SAE 40 is a medium-speed trunk-piston diesel engine oil operating on residual fuel. Argina T is designed for conditions of moderate oil stress.

SHELL Caprinus XR SAE 20W-40 is a premium zinc-free, and chlorine-free railroad and marine engine oil with an established history of providing outstanding engine cleanliness. Recommended for medium speed two-cycle and four-cycle diesel engines used as auxiliary or main engines in marine service or as switching locomotives.