Oil has nothing to do with how Rhoads lifters pump up. They rely strictly on engine RPM.
That said, I've always looked at them as a "band aid" for over camming an engine. The only exception is their new VMax lifters. They are truly a different breed. But all in all, as long as you make the proper cam choice to begin with, the Rhoads lifters will not be necessary.
That said, I've always looked at them as a "band aid" for over camming an engine. The only exception is their new VMax lifters. They are truly a different breed. But all in all, as long as you make the proper cam choice to begin with, the Rhoads lifters will not be necessary.