The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - What kind of gas mileage do you get with your 67-72?

Red71gmc · 10-02-2018, 09:55 PM

Nearly same setup as OP and get 12.5 with non ethonal. Never checked with ethonal blend because it doesn't start as good and rarely use it. Non highway driving with start/stops.
I need to take it for an interstate drive and see.

10-02-2018, 09:55 PM	#29
Red71gmc Registered User Join Date: Jan 2017 Location: Brookston, In Posts: 482	Re: What kind of gas mileage do you get with your 67-72? Nearly same setup as OP and get 12.5 with non ethonal. Never checked with ethonal blend because it doesn't start as good and rarely use it. Non highway driving with start/stops. I need to take it for an interstate drive and see.