ClassicOldsmobile.com - View Single Post - What kind of gas mileage do you get in your olds?

W30post · 10-28-2007, 07:07 PM

455, 200 4R overdrive and 3.42 gear. Decent tune with 2.5 inch pipes. I run a 26 inch tall tire and I use lock-up when the car achieves 4th gear. I get 15.5 mix driving. I haven't been on the road enough to know highway MPG.

10-28-2007, 07:07 PM	#8 (permalink)
W30post Member Join Date: Oct 2007 Posts: 33	455, 200 4R overdrive and 3.42 gear. Decent tune with 2.5 inch pipes. I run a 26 inch tall tire and I use lock-up when the car achieves 4th gear. I get 15.5 mix driving. I haven't been on the road enough to know highway MPG.