In the OLD cars yes this could happen.
But on the newer cars between the baffles in the tank and anti-slosh modules on many cars to stabilize the gas gauge from fluctuating, you should almost never see a change in the fuel gauge just from accelerating.

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Wow... What a great resource.

Thanks Master Tech!

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Dan H.
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My aunts 1997 Buick LaSabre slips ocasionaly whenever my aunt puts it in gear. Will the transmission cease? If not what will happen? My aunt thinks the tranny will go and she would like a cheap way out.

Hunter

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Kinghunter: Truck Photographer, Airline Guru and Boat Guru

I don't want to step on MT's toes here but I think the best way to save gas where you can REALLY see it is to stay 55 or below.
I have a 97 Ford Aspire and it only holds
9 1/2 gallons. If i drive 70+ mph i'll get 310 miles to a tank. If i don't go above 55 i'll get 344 miles to a tank!
But i know 55 is hard to do.

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If I drive 55, will having my a/c on affect my gas mileage or will it be the same? I am not good with cars.

Hunter

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Kinghunter: Truck Photographer, Airline Guru and Boat Guru

According to Consumer Reports magazine, Running the A/C will get around 2 miles less per gallon.
There are other things to consider with gas mileage. If you drive or live in a hilly area you will get less miles per tank due to the engine sucking more fuel to climb those hills. When it's hot i run my air! I'd just rather get a few miles less per gallon than sweat to death.
But thats just me.

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Proud Supporter Of: St. Jude Children's Research Hospital

Gun carrying, Pro-choice Blue Dog Democrat and damn proud of it!

I absolutely refuse to go 55 or under out on the highways!

YOU got to be kidding me, I would be blown right out of my lane up here.

These people see these 4 laners as a race track. Even the 18 wheelers would push me out of the way............ And I'd really be pissed if it was a driver I knew

Without running my a/c, my car will get 26-28 pending on how I drive. With it on it will get 24-25 tops.

Hunter

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Kinghunter: Truck Photographer, Airline Guru and Boat Guru

Hey Mastertech.

I have a 2001 GMC Sierra 2500hd with the Duramax diesel in it. I recently got the turbo replaced and now after a long boot on the highway when I park and let it idle it smokes blue out the exhaust.

After a while it stops and all is good untill I drive it hard again. Any thoughts?

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2004 Kenworth T800
Red 60" aerodyne flat top sleeper

Yukon, I have little experience on diesels, but 30+ on cars. First questions are, how many miles, and how much oil do you use per 1000mi. Sounds like valve guides, but if consumption is "normal", don't worry. If you have a catalyst, it cools down at idle after a couple minutes, and you'll see a little blue after a couple minutes, then blue for a minute or so at higher speed and load, until the cat. lights off. If you get blue right after going to idle (with cat hot), look where the crankcase vent is, if before the aircleaner you'll see oily filter, if after the air cleaner in the intake duct, you'll see oil at throttle body. If this is extreme you may have a blockage in the PCV passage, and high crankcase pressure, with high idle vacuum, will cause short term oil burning. Like EGR systems, they tend to block up where the PCV meets fresh air in the intake, and can be cleaned. Make sure PCV is from dealer, not aftermarket. If you'r not burning excessive oil, charge your neighbors for mosquito eradication.