How to change the blinker fluid in your car or truck:
STEP ONE: wear safety glasses! If you get any fluid in your eye, it will cause uncontrollable blinking until you wash it out.
The oil change shop tried to scam a customer by telling him that his car needed "blinker fluid"
The customer said, "Nice try, you can't trick me. My BMW doesn't have blinkers!"
Mechanics might disagree, but...
...eyedrops are technically blinker fluid.
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