Don't Be Left In The Dark With Bad Fuel
As blood is to our hearts, fuel is to the engine.

Knowing what is in your fuel (blood) can help you prevent sudden engine failure (heart attacks), equipment malfunction (organ failures) or even avoiding operational problems (head aches).

Just like a person on a certain diet, specific fuel grades are used to fuel different engines based on their manufacturer and the condition of the vessel they run. Others may choose to consume anything they can chow on, but that won't get them too far.
To ensure that we are getting the right diet, we will need to stay away from hard to digest food, like fuel with low ignition quality, high sediment, high pour, high water content, etc. as well as high cholesterol food (fuel with high catfines) and definitely poisoned food (fuel with chemical contamination).

But how do we do that?
Testing, Testing, Testing...

Buying from a reputable supplier is just the beginning. Testing fuel quality is a must in order to safeguard against catastrophic issues such as high catfines. This is similar to when you visually inspect or smell food before you choose to eat it. At other times testing is done to comply with certain regulations for the safety of others and the environment; this is similar to having drug tests done.

There are many things to test for and keep in check, but I will leave it up to you to decide why you need to test.

The well being of other may depend on your own well being....
IT IS NOT JUST A FUEL... IT IS THE BLOOD OF YOUR ENGINE... SO TAKE CARE OF IT...