Question about gas milage...... I need help

[2006BlackGT]

Ok so this week I changed the oil in my g6, I was a little over 5000k and noticed that i was getting worse gas milage so I got right on it and changed it. Now when my oil was good i was getting like at a high of 10.6L for 100km and now im up to 12.3L for 100km. I am in canada and its cold right now so I dont know if thats whats doing it or not. Please help me figure out. The gas is killing me and I know that this isnt right. I was thinking maybe spark plugs, but I dont know. Thanks guys

[ahuhn]

Re: Question about gas milage...... I need help

if you remote start and let it run alot itll go down by quite a bit. also make sure tire pressres are good and air filters clean

[Tombstone86]

Re: Question about gas milage...... I need help

Another thing being winter they change the gas at the pump. I forgot exactly what they do but I think they make it richer to help the engine run better in the cold.

[ahuhn]

Re: Question about gas milage...... I need help

they make it easier to vaporize because gas doesnt like to vaporize in the cold

[2006BlackGT]

Re: Question about gas milage...... I need help

Another thing being winter they change the gas at the pump. I forgot exactly what they do but I think they make it richer to help the engine run better in the cold.

I have the exact same car as you, how dose yours run in the winter

[Lmac83]

Re: Question about gas milage...... I need help

In the summer i get an average of 8L/100km , right now i seem to cruise at 9.4L/100km. It must have something to do with winter gas.

[mrslcom]

Re: Question about gas milage...... I need help

The prime difference with gas sold in the winter is that they contain more anti-freeze so they won't freeze in your fuel lines.

[Tombstone86]

Re: Question about gas milage...... I need help

Another thing being winter they change the gas at the pump. I forgot exactly what they do but I think they make it richer to help the engine run better in the cold.

I have the exact same car as you, how dose yours run in the winter

I love driving my 6 in the winter. I have snow tires on my stock chrometec rims and I can keep up with my buddy in his 4wd GMC seira. I just remote start it at least 5 min before I leave and let it get some heat through the motor and just go. Last year I usually got about 19 mpg (which if I do my math right thats 8.07 km/l ) but this year I installed a GT-R exhaust a couple of weeks after snow hit and now I cant stop reving and messing around so I can hear it loud, but im getting around 17mpg(7.2 kml). I can imagine being from MI we can kind of relate as far as snow and cold.

[Shadow]

Re: Question about gas milage...... I need help

I brag about my car's mpg to anyone who will listen. I think it's amazing for a 4,000 lb car with 200 HP! It beats my daughter's Escort which has over 1,000 less lbs and over 100 less HP.
It also beats my other daughter's Civic, and the other's Mazda 3. GM should be proud of that!

Winter does take it's toll on the mpg but I usually get 400 Km per tank in the winter. In the summer I get almost 30 mpg in the city and have on one tankful this past summer on a road trip to BC it got 47 MPG. My usual is about 44 with straight highway driving. I convert to mpg from L/100 because even though I am a firm believer in the obvious superiority of the metric system, some things just dont sound right in metric to me.
** The gallon I speak of is a Canadian gallon of course

[SexyG6]

Re: Question about gas milage...... I need help

Another thing being winter they change the gas at the pump. I forgot exactly what they do but I think they make it richer to help the engine run better in the cold.

I have the exact same car as you, how dose yours run in the winter

I love driving my 6 in the winter. I have snow tires on my stock chrometec rims and I can keep up with my buddy in his 4wd GMC seira. I just remote start it at least 5 min before I leave and let it get some heat through the motor and just go. Last year I usually got about 19 mpg (which if I do my math right thats 8.07 km/l ) but this year I installed a GT-R exhaust a couple of weeks after snow hit and now I cant stop reving and messing around so I can hear it loud, but im getting around 17mpg(7.2 kml). I can imagine being from MI we can kind of relate as far as snow and cold.

where abouts around Kalamazoo? i live in Portage and am pretty much back for the winter, but im usually out west MT, WY, CO, UT etc working ost of the year lol.

[htwo]

Re: Question about gas milage...... I need help

Ok so this week I changed the oil in my g6, I was a little over 5000k and noticed that i was getting worse gas milage so I got right on it and changed it. Now when my oil was good i was getting like at a high of 10.6L for 100km and now im up to 12.3L for 100km. I am in canada and its cold right now so I dont know if thats whats doing it or not. Please help me figure out. The gas is killing me and I know that this isnt right. I was thinking maybe spark plugs, but I dont know. Thanks guys

Cold weather has it's downside. Don't forget to take into account low speed driving (winter traffic) and extra idling time. Both increase mileage more so than the so called winter gas. Spinning the tires in the snow is another matter that can decrease mileage dramatically. I notice mileage changes in my FWD cars, but my AWD Durango holds similar mileage year round at around 14-22L/100km.