Our friends at Summit Racing have launched a new high-performance motor oil and engine break-in oil, specially formulated with ZDDP for high-powered flat-tappet cam engines, as well as winter storage […]
Some engine builders like to use API CJ-4 diesel motor oil as a break-in lubricant for new engines. That’s because it contains plenty of zinc (ZDDP) to protect flat-tappet camshafts. […]