Quaker State 550038211 Defy 5W-30 Synthetic Blend Motor Oil - 5 Quart Jug Quaker State Defy helps top engine wear in its tracks, preventing up to 98 percent of future wear in laboratory tests with real engines, The proprietary additive package is an outstanding wear fighter in engines Defy Synthetic Blend Motor Oil is resistance to oil leakage; Active seal conditioning agents helps prevent leaks and reduce oil loss Provides active base to neutralize combustion acids that can corrode your engine It restores performance with thicker viscosity to help improve combustion chamber sealing to restore compression and reduce blow by