Used by Joe Gibbs Racing to break-in and dyno all their NASCAR Nextel Cup and Busch Series engines, this petroleum based oil provides superior break-in properties for flat-tappet engines. The special additive package promotes ring seal and provides maximum protection for cams and lifters during initial break-in. MicroZol BR can also be used to break in roller cam engines, and it can be used as a general purpose dyno oil.

• For use in break-in of high powered, high performance race engines, including ASA, Late Model, Drag, etc.

• Promotes ring seal and provides maximum protection for cams and lifters during initial break-in.

• Exceptional break-in performance in flat tappet race engines.

• Can also be used to break-in roller cam engines.

• Can be used as general purpose dyno oil.

• Used to break-in all Joe Gibbs racing engines.