| Author |
Message |
Verell Boaen (Verell)
Member
Username: Verell
Post Number: 727
Registered: 5-2001
| | Posted on Monday, May 12, 2003 - 8:22 pm: | |
When the light comes on you're using the reserve.
From that point on, your driving distance may vary...
308s, especially the carbed ones are notorious for the fuel gauges being optimistic.
Also, since the fuel pump is cooled by the gas flowing thru it, you don't want to run low enough for it to occasinally suck air...
My QV mileage is about 22 highway (~65mph, drops off quickly above that), 15-16 back-roads commuteing (~35-45mph). Haven't the foggiest what it would do in sustained 'city' traffic. |
mike 308 (Concorde)
Junior Member
Username: Concorde
Post Number: 191
Registered: 8-2002
| | Posted on Monday, May 12, 2003 - 11:23 am: | |
I get 11 mpg city, 20 mpg highway. But mine is a QV. |
Bruno (Originalsinner)
Intermediate Member
Username: Originalsinner
Post Number: 1099
Registered: 5-2002
| | Posted on Monday, May 12, 2003 - 9:34 am: | |
I only get about 9 mpg in city. Got 140 mains and free flow exhaust with no cats. I get 11.8 on HGWY.Needs gas all the time. |
"The Don" (Mlemus)
Advanced Member
Username: Mlemus
Post Number: 4602
Registered: 8-2002
| | Posted on Monday, May 12, 2003 - 7:36 am: | |
Mike, Steve.
The light comes on once the tank hit's (or think it hits) 14 gallons.
Do not trust the gauge once the light's on.
Matt |
Steve Smith (Steve308)
Junior Member
Username: Steve308
Post Number: 64
Registered: 2-2002
| | Posted on Monday, May 12, 2003 - 7:28 am: | |
Mike -
I've always assumed that it's as you say - the light comes on with around 4 gallons left. That 47 mile estimate certainly seems a worst case - but I personally have never gone more than about 20 miles with the red light constantly on. I don't overly trust the accuracy of a 20 year old gauge! |
Mike Procopio (Pupz308)
Member
Username: Pupz308
Post Number: 357
Registered: 10-2002
| | Posted on Monday, May 12, 2003 - 1:22 am: | |
Regarding 1978 308 GTS fuel tank capacity...
The owners manual states a capacity of 18.5 US gallons. Just to the left of that, it's noted:
"Reserve of + 4 U.S. Gallon = + 47mls"
OK, so at approximately worst-case ("city") 11mpg (also as noted in the owners manual), they're saying 4 gallons left buys you 47 miles. Sounds good.
What's the significance of the 4 gallons? I assume that 4 gallons is not a "factor of safety" built in on top of the 18.5 gallon tank, e.g., I assume the tank doesn't actually hold 22.5 gallons.
Does this mean the fuel level low guage light is designed to come on (yeah right) with 4 gallons left?
Any input as to at what point you think your fuel warning light starts to flicker / comes on and stays on?
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