http://www.amsoil.com/techservicesbu...onsumption.pdf
Lube oil consumption depends on engine design and motor operating conditions. Dieselnet is a good source.
Typical oil consumption values for pre-1980s engines were 0.46 g/kWh (0.34 g/bhp-hr; 0.25% of fuel consumption), pre-1990 engines ranged between 0.33-0.48 g/kWh (~0.15 - 0.20% of fuel consumption).
A test on a number of 2002 heavy-duty and medium-duty engines in the US yielded an average of 0.22 g/kWh (0.1% of fuel consumption).
Year 2007 heavy- and medium-duty engines consume on average 0.08 g/kWh (around 0.03% of fuel consumption)
Read more: Lube oil consumption of diesel engine




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