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; 03/02/1912:16 AM.
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Engine break-in oil or reg (both with ZDDP) in a new motor?