This is for math students who want to know why they have to study math. I want to mix 2 cycle engine oil with

Question

gasoline. The manual says the mix should be 32:1. I have a 20 ounce bottle of oil, a gasoline container that says it holds 1 gallon and 6 ounces of liquid but there are no markings on the container, and a measuring cup marked in 75 ml increments or 1/8 cup increments.
How do I do it to get the right mix?

Answer 1

The other thing you demonstrate withn this problem is why most of the rest of the world use the metric system!

For the record, while I am an engineer, I do not regularly use the imperial system of measures... all care but no responsibility!

These figures are based on US fluid measures.

Your gas container holds 1 gall 6 oz. At 128 oz/gall this is a total of (1*128 + 6) oz = 134 fl oz.

At 32:1 mix there are 33 parts.
1 part = 134 / 33 = 4.06
32 parts = (32 * 134) / 33 = 130 = 1 gall 2 oz.

I'm seeing a stand out here - if you use 1 gallon of gasoline its a neater calculation and leaves you a bit of "breathing" space in you container.

So on that basis, you require, in your gasoline container
1 Gallon of gasoline and
4 fl oz of oil
all easy to measure and I suspect your container was actually designed for this mix.

The good news is, 1 fl oz = 1/8 cup... you need 1/2 a cup of oil


To get the right mix of fuel:
Take the EMPTY gasoline container to the gas station.
Pump in exactly 1 gall of gas
Add 1/2 cup of oil.
Stir well
use happily
give possum 10 points.... :)

(its midnight here, and imperial measurements drive me crazy!!)

Answer 2

1 gallon= how many ounces