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. […]
Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re providing tips on proper engine break-in. Bill M. • Summit, IL Q: I […]
