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Old 01-05-2013, 03:06 AM   #44 (permalink)
cRiPpLe_rOoStEr
It's all about Diesel
 
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Some heavy-duty Diesels are coming with compound-material valve covers, and occasionally also the oil sump, not just due to the balance of weight reduction, sound deadening and also the thermal properties, to reduce the heat losses. Diesels usually run better at a quite higher temperature, no wonder NOx emissions are their weakness...
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