GM efficiency better than expected
This is a HUGE ASIDE- but Chevy anyway.
We just returned from a 3000 mile roundtrip-NOLA-Flagstaff-NOLA -New Orleansla=NOLA.I have a Prius, but for many reasons-wife has medical problem that requires she not "kink’ her arteries-PAN- we took our 202,300 98 Suburban.Bought it last year to replace the Pilot-evac vehicle-2 dogs,4 cats.
It got 21.3 mpg at 70 mpg over the 3000 mile trip.CC on the entire time.Mobil I 5w30, 45 psi tires, nothing in roof rack did use a hitch carrier.The only hypermiling stuff was the tire pressure,Syn oil and the reduced speed-most folks drive about 3-4 miles faster on the interstates we were on.
We just returned from a 3000 mile roundtrip-NOLA-Flagstaff-NOLA -New Orleansla=NOLA.I have a Prius, but for many reasons-wife has medical problem that requires she not "kink’ her arteries-PAN- we took our 202,300 98 Suburban.Bought it last year to replace the Pilot-evac vehicle-2 dogs,4 cats.
It got 21.3 mpg at 70 mpg over the 3000 mile trip.CC on the entire time.Mobil I 5w30, 45 psi tires, nothing in roof rack did use a hitch carrier.The only hypermiling stuff was the tire pressure,Syn oil and the reduced speed-most folks drive about 3-4 miles faster on the interstates we were on.
I had no idea an ancient 5.7 liter 2wd Suburban could deliver 21 mpg at 70 miles per hour.I’m certain of the distance-done the trip 15 times or more,and certain of the gallons used.
My point is that GMs 5.7 and 5.3 are very efficient-much better than I expected.They must have really fine tuned them for efficiency over the years.
Sorry if this is the wrong place to post.Thought GM deserved some credit.
Charlie
Original post by phoebeisis