Driven Engine Assembly Grease is used by top engine builders and at Joe Gibbs Racing during the assembly of every engine they build. The engineers at Joe Gibbs Racing have put in countless hours perfecting this engine assembly grease to provide extreme pressure protection for heavily loaded parts during initial break-in. The unique formula completely dissolves in oil and when combined with Driven Engine Break-In Oil (BR or BR-30) it provides total protection during the critical engine break-in period.  1 ounce tube.