Traces of oil.
I’ve drank oil, transmission fluid (both auto and manual trans), anti-freeze, and battery acid. Didn’t hurt me.
Besides, if you could see what’s on the inside of your area’s water supply pipes, oil would be the least thing you would worry about.
Ok I'll bite, WHY?
Besides, if you could see whats on the inside of your areas water supply pipes, oil would be the least thing you would worry about.
So what's in our city water mains?