# Need conversion help

1. Jan 30, 2005

### Sufa

Hi newguy here
Heres the problem:

If one fluid ounce treats 2-1/2 gallons, how many ounces (or mililiters) are to be added to a .45 liter tank?

I want to add fuel stabilizer to my weed eater gas tank.

2. Jan 30, 2005

### dextercioby

IIRC,"ounce" (avoirdupoids) is a unit for MASS,while "gallon" is for VOLUME/CAPACITY...So u need the density...
So it's not "OUNCES (or MILLILITERS)",but OUNCES...

Daniel.

P.S.Roughly 1 gallon=~4.54l...In the UK,or 1 gallon=~3.78l in the US.

Last edited: Jan 30, 2005
3. Jan 30, 2005

### Sufa

I'll take mililiters also. Density? Don't know that. The bottle simply says 1 ounce treats 2-1/2 gallons (U.S.) The tank is .45 liters. Just assume the tank is full of gas. Maybe thats the density.

4. Jan 30, 2005

### mikeu

0.45 litres is roughly 0.1 gallons (actually 0.099 british gallons or 0.119 US gallons - found this here, not sure which you're using). So if one fluid ounce treats 2.5 gallons and you want to treat 0.1 gallons you'll need 0.1/2.5 = 0.04 fluid ounces, which is little more than one millilitre:
$$\frac{1\mbox{ fl-oz}}{2.5 \mbox{ gal}} = \frac{x \mbox{ fl-oz}}{0.1\mbox{ gal}} \implies x = \frac{1\mbox{ fl-oz}}{2.5 \mbox{ gal}}\times 0.1\mbox{ gal} = 0.04\mbox{ fl-oz}$$
Hope that helps.

5. Jan 30, 2005

### Sufa

Thank you!

6. Jan 30, 2005

### DoubleMike

Google is really very useful for these things. For example, you could type speed of light in furlongs per fortnight, and it will convert it for you.

Just a tip

7. Jan 30, 2005

### dextercioby

How about feet per eternity...?? Can they do that???

Daniel.