Premium fuel required!?

Zef_66 · 07-02-2008, 12:42 PM

Also, even if the fuel expanded when it got hot outside (which I doubt it does), this would not improve your fuel mileage. Your engine would still burn the same amount of fuel. You would just be getting more/less fuel for the same money.

Reptile · 07-02-2008, 12:52 PM

The fuel does expand once it heats up. You never notice this because of the evap system on the cars equalizes the pressure when it expands and contracts.

On older cars, you'll hear the air rush in/out when you loosen the fuel cap.

Freebeer187 · 07-05-2008, 05:39 PM

Quote:

Originally Posted by Reptile

The fuel does expand once it heats up. You never notice this because of the evap system on the cars equalizes the pressure when it expands and contracts.

On older cars, you'll hear the air rush in/out when you loosen the fuel cap.

My 95 Camaro would do that all the time when the tank was very low (under 1.5 gallons in tank)

07-02-2008, 12:42 PM	#31
Zef_66 GTX Level Member Join Date: Dec 2007 Location: Middleburg, PA Posts: 877 iTrader: (0) Rep Power: 1	Re: Premium fuel required!? Also, even if the fuel expanded when it got hot outside (which I doubt it does), this would not improve your fuel mileage. Your engine would still burn the same amount of fuel. You would just be getting more/less fuel for the same money. __________________ 1997 GTP - 196xxx miles, PEMs, 3" SS Exhaust w/ Borla Mufflers, 3.4", 180* stat(summer), FWI, 1.84 RR, PT, SLP hood, KYB GR2s, GMPP Handling Kit, etc...

07-02-2008, 12:52 PM	#32
Reptile Community Vendor Join Date: Dec 2007 Location: Kansas City, MO Posts: 1,341 iTrader: (7) Rep Power: 2	Re: Premium fuel required!? The fuel does expand once it heats up. You never notice this because of the evap system on the cars equalizes the pressure when it expands and contracts. On older cars, you'll hear the air rush in/out when you loosen the fuel cap. __________________ GreenBastardPerformance 2000 GTP Coupe (the green bastard) XP, Pacesetters, LS1 TB & MAF,MSD System, P&P LIM, P&P GenV w/ 3.2, 3.0, 2.8, Devil'sOwn Injected 100% Methanol,PowerTuned, TripleEdge Trans w/3.29's 12.97 @ 106mph

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