Fuel Tank Only Filling up to 7/8 - Page 12 - Chevy Malibu Forum: Chevrolet Malibu Forums
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post #111 of 113 (permalink) Old 01-06-2017, 02:37 AM
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Re: Fuel Tank Only Filling up to 7/8

Wow, 41 in this kind of weather! Just might be worth looking into if/when I have to replace my ride.

The nice thing about this forum is that it's more like how we talk face to face with each other - we tend to wander around but come back to the subject eventually.
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post #112 of 113 (permalink) Old 01-06-2017, 03:31 AM
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Re: Fuel Tank Only Filling up to 7/8

After the pump clicks off I wouldn't try squeezing anymore into it. I've seen quite a few people on other forums have trouble with charcoal canisters and other emissions parts because of it. There is supposed to be enough room in the tank for vapors and by adding too much fuel you are possibly introducing fuel into the parts that should only be dealing with vapor.
I used to do the old top off after the clicking off and never had any problems but really what's the use?


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post #113 of 113 (permalink) Old 01-06-2017, 08:25 PM
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Re: Fuel Tank Only Filling up to 7/8

Quote:
Originally Posted by Dr. Manhattan View Post
Sorry about the off-topic rant. Going back to fuel tank capacity, I performed my first fill on my Hybrid today. The car said 68 miles remaining, while the gauge showed a needle's-width less than 1/8th of a tank. I locked the nozzle on the slowest notch, and it clicked off at 11.4 gallons. Then I waited about 10 seconds before resetting it on the slowest notch again. It clicked off at 11.6 gallons. I repeated twice more, and each time it added 0.2 gallons. After the third reset, I stopped at 12.0 gallons. That really seems like a reasonable ball park amount. Assuming that the dealer's initial delivery fill stopped after the first shutoff, my first tank returned just over 41mpg. Not bad, considering the car sits outside in the temperatures we've had around these parts during the whole tank...and the fact that, at said delivery, we spent a good 45 minutes idling the car while trying to stay warm and get the obligatory initial OnStar call over with. In the same type of use and conditions, I can't imagine that my dear departed Golf TDI would have done any better...and the Hybrid's fuel is cheaper in the bargain.
At the first fill-up a few months ago, mine took 52.2 L (13.8 gal US); there were 2 click-offs in total with a few seconds in between to allow it to settle. The low fuel indicator came on while sitting in the line at the CostCo filling station (level ground), and the fuel gauge was a hair above the empty mark. It hasn't been allowed to get this low at subsequent fill-ups (each around 12 gal US), which have occurred roughly about the 1/4 mark on the gauge. So far, total fuel range estimates have varied from 550-625 miles depending on the driver. I suspect my Hybrid has a fuel capacity of 59.8 L (15.8 gal US) instead of 49.2 L as noted in the manual. Lifetime economy is reported as 5.7 L / 100 km (just over 41 MPG US) which is surprisingly good given the high percentage of short trips in cold weather. After a cold start, it averages just under 20 MPG US over the first mile! It's easy to exceed the EPA figures once it's reached operating temperature.
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