Last post on Mar 24, 2012 at 5:39 PM
You are in the Chevrolet Cobalt
What is this discussion about?
Chevrolet Cobalt, Fuel Efficiency (MPG), Coupe, Sedan
#298 of 304 Re: Chevrolet Cobalt: Real World MPG [KarenS]
Mar 16, 2012 (1:18 pm)
Please see my reply #296. I always get 38 - 42 MPG highway and sometimes 44 or 46. This is highway with no traffic jams, no slow traffic, no steep hills.
Mar 16, 2012 (1:20 pm)
Please see my post #296, with automatic 38 - 42 MPG and sometimes 44.
#300 of 304 Re: Tail Lamps [corys3587]
Mar 16, 2012 (1:31 pm)
Superbrightleds.com has a huge selection. It's best to call them and speak with the rep. If you replace the filament bulbs with LEDs, you will have to
order a load-resistor for each one because the LEDs draw much less current than the filament bulbs. If you don't use the load-resistors, they will flash very fast, called hyper-flashing. BUT, the load-resistor has to be wired across the LED, and it generates heat, so you have to mount it on a flat surface with two screws. One of the ones I got broke at the wire-to-resistor solder joint because there was not strain relief. I returned them because I did not have a flat spot to mount the heat-generating resistors.
#301 of 304 Re: 06 Cobalt LS [pa356228]
Mar 16, 2012 (1:38 pm)
Please see my Reply #296. No service station will put hydrogen into a tire because it will explode. They do put in nitrogen for a fee of $5 to $12 per tire. The benefit is that the tire pressure will vary less with changing temperatures beause pure nitrogen expands and contracts less than air, which is 80% nitrogen and 20% oxygen.
#302 of 304 Re: I'm new to this forum. I have a 06 Cobalt LS Auto. [laserblue]
Mar 16, 2012 (1:40 pm)
That's a good point about a clean and waxed car. I keep my with a car cover and wax it 3x per year with Turtle Wax Blue Ice and I get 38 - 42 MPG always highway. Please see my post #296.
#303 of 304 extra nitrogen in tires, total waste of $ !
Mar 24, 2012 (5:31 pm)
just so you know.. there is no benefit to extra nitrogen in a cobalt tire or any passenger care tire, except for lining the wallet of whoever sells it. the idea of hydrogen in the tire is horrifying and reminds me of the JATO story legend ...
btw, measure distance-driven/gallons to see the real mpg and compare with dashboard mpg-meter... i bet you'll find the dashboard usually off by the same percentage and reading a tad high in your case.
I always liked cobalt styling! almost bought one but waited for cruze. :}
#304 of 304 smooth paint vs smooth wax finish for mpg (!)
Mar 24, 2012 (5:39 pm)
i avoid waxing cars...
let's just say/suppose it's for mpg reasons: i figure the weight of the wax costs more mpg than the smoothness/airflow at such low speed.
but seriously folks, the clearcoat under the wax is just as smooth as a layer of wax on top of it, isn't it ?
for aircraft the weight of the paint really matters - iirc, some aeronautical painter discovered a way to use thinner layers of paint... added up to hundreds of pounds per aircraft... less weight, saves the airlines BIG $ on fuel.