The little lady's van started using oil at a rate of about 1,500 miles per quart, and several attempts to stop the consumption (Seafoam, etc) didn't address it.
Two OCI's with "high mileage oil" (whatever the shop used, IDK), and the consumption is back to a quart per 4-5000.
In my old Tacoma, it stopped oil consumption, as well. I don't know what's in the additive package, but it seems to work.
