MDR Crankcase Stor-N-Start is an anti-rust motor oil additive for winter storage. During storage, motor oil eventually drains off cylinder walls, pistons, rings, bearings, and all other internal metal engine parts, exposing them to corrosion. Crankcase Stor-N-Start forms a protective shield on all internal parts, preventing rusting during storage. Before lay-ups, pour into crankcase and run engine for 10 minutes.

Treats 5 quarts of oil.