Outside of gaming, "DT20" frequently refers to the engine (a 3.0L TDV6). Rebuild specifications for this diesel engine include complex matching tables for bearing shell grades (e.g., matching a "5" on the crankshaft with a "3" on the block to select grade C4). Guide :: Starfield Ship Crafting - Steam Community
(manufacturing quality) of specific engine components intended for use in cold environments.