What's the absolute maximum range of your Duster?

318willrun said
This ^^^ Something is killing the gas mileage. A plugged Cat ?

I don’t remember a ‘74 Duster (I owned one w/a 318) having catalytic converter(‘s) on the exhaust. Just a muffler and resonator. Perhaps Cali Dusters had them. N.Y. did t follow Cali car equipment until much later.
I guess if so equipped, a partial collapse would do it.

yellow rose said
That’s exactly what my car looks like. And yes, yellow is the fastest color. That has been scientifically proven.

I’d believe that one. Just because it’s odd.

RustyRatRod said
No it hasn't. Red is the fastest color. Just ask any insurance company. Man you got lots to learn. dummy. lol

I think it’s actually that RED gets into the most accidents.