You can discover the oil additives you need for your 1999-2003 Ford 7.3L Powerstroke, whether you need zinc break-in, stiction eliminating, stabilizing, or performance Oil Additives. These additives can help restore power by restoring lost compression while protecting and cleaning internal engine surfaces. Decrease friction and heat to help extend the service life of your engine oil. Top lubricant producers including Hamilton Cams, Lucas Oil, XDP, Rev-X, and Hot Shot's Secret are offered by XDP.