Often stocked at autoparts stores, this is not the Delo 400 that is so famous for cleaning out your engine, it is the "LE" deviation. Our machinist, RIP Ron Powers, taught us about Delo 400, but the LE deviation was too suble for most to notice. What are particulate filter diesels?; Those newest ones with all that exhaust work fit below the vehicle and require that blue fluid. Bluetech, etc. Mercedes calls this a 228.31 oil, a lower quality additive package than the 228.3 oils. Stay away from thSee full review