Some Diesels have an auxiliary injector tip at the DPF body, that's the best way to overcome fuel dilution in oil.
Quote:
Originally Posted by RobertISaar
EGR isn't likely to be an issue or contributor for this problem.... most engines these days don't have EGR valves, instead VVT is used to change cam timing around so that when the piston starts it's downward motion for the intake stroke, the exhaust valve is left open enough to draw in exhaust gasses with the fresh air charge, essentially an internal EGR mechanism.
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External EGR systems lead to carbon deposits at the intake manifold, therefore they still suck
