easy choice / lubricator

EASY CHOICE is self-lubricator not to mistake in putting fuel
which is unsuitable for your car into your car, especially for
a inexperienced driver.There is no confusion in choosing suitable
fuel for your car because It's so easy to recognize each kind of
fuel by distinguishing each forms of lubricators.
And It's especially useful to color-blind person or people who
havepoor eye sight like the elderly.