Originally Posted By: jamesyarbrough
Im in no way saying this application needs a break in oil.
OK, neither am I.
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All im saying is PU is not a break in oil, its a PCMO.
Correct. As are probably most factory fills on modern engines.
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And if the OP wants added ZDDP on a short break in run it wont hurt.
True, but the manufacturer explicitly states not to use additives in the oil. So while under warranty, on an application that we both agree doesn't need break-in additives, it doesn't seem like a wise move to me.
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Theres no harm in it so why argue about it?
The only potential harm would be if there was an issue and Ford decided to analyze the oil. But that's unlikely to happen I agree. But at the same time I think we can agree that there's no benefit to it either. It's a feel-good thing.
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I dont understand why everyone is bashing on a break in additive. Even if it is not needed for a long life on this engine, it may help. So when you have no possible disadvantage and only a possible advantage, why not?
That's not what we are doing
I'm not bashing a break-in additive for an engine that may actually need one. With one of my buddy's, we've broken in a number of SBC flat tappet cams using GM EOS as per the recommendation of the machinist we know and one of those sticks was a Lunatti Voodoo, a camshaft with very aggressive ramp rates for a flat tappet stick.
On the other hand, we've never used anything in our SBF's with roller cams because they don't need anything.
The point that is being highlighted here is that this isn't an aftermarket built motor with the need for any sort of additive. It is an under-warranty stock engine with the manufacturer advising the use of a particular lubricant that carries or meets the necessary Ford spec. Using anything other than that leaves the flap on the back of your long undies open in case there is some sort of issue with the engine and Ford, who isn't known for being overly generous on the warranty front, decides to make a stink about what they find in the pan.
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I was kind of agreeing with the other guy on the subject but he never caught on and wanted to be impolite so I just dropped it.
So to sum up my view on the subject
PU is not a break in oil, and although many new cars dont require a break in oil and use regular PCMO as factory fill that doesn't mean there is no possible benifit of using a break in oil or break in additive.
sorry for any confusion.
He wasn't being impolite, I think he was just frustrated that you didn't appear to be getting what he was saying. And no need to apologize, hopefully my explanation above may make what's being said a bit clearer.