I use ELF DALF every 10000Km, otherwise I use premium grade diesel available here which comes with its own additivie package usually Techroline from Chevron, works out quite well. No smoke from a 78000 mile engine.

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99 Gurkha with OM616 IDI turbo

2015 Gurkha with OM616 DI turbo

2014 Rexton W with OM612 VGT