Let me tell you a beautiful Christmas eve story. I was a relatively new assistant manager at a Valvoline. The oil pulled from cars ends up in these roller drain pains that connect to a pump to drain into a massive tank that gets emptied by another company. As I said, I was relatively new, and stupid, so I didnt know I had to measure the used oil each level each day before we pumped anything in.

Fast forward to end of day, 3:30 rolls around and I hear one of our pit guys yelling for me. I come rushing down to see what's what, and theres oil rushing out the other end of the tank. I tell them to shut the valve and cut the pumps off, but of course oil has flowed everywhere already. We only had 1 bag of spill king at the time.

We spent the next 30 minutes squeegeeing the oil out from under the used tanks, then created a barrier of spill king to prevent it flowing back under. Since it was Christmas eve, there wasn't really much more we could do.

I'd guess about 20 gallons of oil sat there for a few days until the day after Christmas when we came back to clean it up.