[Tom Bombadil]

The exhaust is remixed with the combustion air

Years ago, a friend of mine took the "blow by" on his '61 Falcon and routed it back into the the air intake by using an old bike inner-tube. His blue cloud disappeared for about a week, and then the whole thing just croaked from carbon build-up.

Thanks for the memory.

[AmericaUnited]

The exhaust is remixed with the combustion air

I was wondering how they would market those old EGR valves...