[T3] ZDDP: How much is too much?

[Know One]

> Now to figure out what to do with all this used motor oil
> that is in 5 gallon cans out in dad's shop.

Depends on what state you are in. If in California there are lots of places that take used oil back for reprocessing.

Before the laws changed mandating oil recycling here, I took mine to one of the local quicky-oil-change places and they just added it to their used oil bin. Ask around.

Jeff '67 Sqbk