Quote:
Originally Posted by E4ODnut
Just to add fuel to the fire.
I don't doubt that newer EGR technology will both enhance economy and reduce emissions. But. If you have ever disassembled a fairly high mileage late 80s or early 90s engine, even with good maintenence, the intake tract is disgusting. What does this do for economy and emissions in the later stages of engine life? I really don't know, but I doubt that it's good.
Ever try clean one of these engines up for rebuild?
Not fun.
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You think the gas engines with EGR are disgusting, the diesels are far worse. They have higher compression for more EGR flow, and they get more oil blowby that coats everything. I've seen completely plugged intakes on cars with less than 100k miles.