It's standard for older diesel engines to emit black smoke under full load, which occurs during "turbo lag." As the diesel engine waits for the turbo to spool, the machine will blow thicker black ...
At some point warm mix asphalt may be routinely specified by state DOTs, and will likely provide an answer to issues with blue smoke - but a simple and cost-effective solution for asphalt plants is ...
Motoring Chronicle on MSN
How to tell what your exhaust smoke colour means (and when to worry)
Blue or grey smoke means the engine is burning oil, usually from worn piston rings, valve seals or a failing turbo seal, and ...
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