The internet is where I bought mine. I used Driven 15w40 break-in oil with 2 bottles of Hamilton cam break in additive and a bottle of Lucas zinc zddp. Also the Lucas zinc additive only treats 4-5qts per bottle.
I'm rebuilding my 12 valve engine in a couple weeks.
What should I use for break-in oil/ additive?
Stock bottom end and pistons, new camshaft, aftermarket valve train stuff.
I can't find the 15w40 from Driven, only 15w50?
What makes a "break-in oil" a "break-in" oil? The theory is that it's actually a crappy oil that doesn't have certain wear inhibitors, logic being you want certain things to wear faster during break in?
Is there a difference between "break in" additive and just ZDDP additive?
I'll be building the engine back home in California over Christmas, the truck hasn't swam over yet.
Jegs is where I got mine
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Guys using cheap regular oil, do you use any "break-in additive" along with it?
Guys using cheap regular oil, do you use any "break-in additive" along with it?
We never use break in oil, just our regular AGCO branded 15w40 and change it after 50 hours. We've rebuilt a couple hundred engines over the years without incident.
IMHO, and experience,
Chris
We do not. Generous application of assembly lube (Royal Purple or Red Line) on everything as we're building, then fire them up, check for leaks, and to the dyno for 2 hours give or take at various loads and RPM ranges.
Explain the need for break in oil for me? Looks like it has more zinc and phosphorous to make it extra sticky during initial startup...with assembly lube, what's not protected? Also, we always make them have oil pressure before the engine is allowed to start.
Not saying there is anything wrong with using break in oil, but don't exactly see the "requirement" here?
Chris