Looking for input on engine oil preference for a new motor. Do you prefer engine break-in oil (e.g. Brad Penn Oil) or regular oil (20W50 OR 10W30) with ZDDP additive on a freshly built Mopar 340, 440, etc..

How long do you like to leave the oil in before the 1st change?

Last edited by vinnyd76; 03/02/19 12:16 AM.