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**Palf70Step** · 07-27-2022, 03:36 PM

For a new cam I would definitely run high zinc oil (Valvoline Racing) plus additive ( I used GM breakin additive or Lucas oil brand) . That is what I do on all mine for breakin. It might be an overkill, but It stinks to loose a cam on break in for a few dollars extra on lubricants. Then I normally end up using the Rotella T4 diesel oil after the initial break in period

07-27-2022, 03:36 PM	#4
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 46,725	Re: 72 250 6 cyl cam? For a new cam I would definitely run high zinc oil (Valvoline Racing) plus additive ( I used GM breakin additive or Lucas oil brand) . That is what I do on all mine for breakin. It might be an overkill, but It stinks to loose a cam on break in for a few dollars extra on lubricants. Then I normally end up using the Rotella T4 diesel oil after the initial break in period __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!