there was a bulletin from honda...so how can it still be a "myth"

 

Well, my "info" if you want to call it that is from BITOG and a bunch of other sites that were read so long ago I can't remember the links.

On BITOG I have two main sources, UOAs (used oil analysis) from new cars and credible input from long time members on that forum. UOAs on new cars, especially cars with Japanese engines, almost always show an extremely high moly content in the factory fill. Quite a few credible members on BITOG have been able to show a strong link to the moly content and engine assembly lube. Some of the guys on BITOG build their own engines and have shown their UOAs during engine break in, which also show similar high amounts of moly from all the assembly lube that they used when building the engine.

You can also find VOAs (virgin oil analysis) of unused engine assembly lube on BITOG. The VOAs show an equally high amount of moly in the assembly lube, thus leading me to believe this is what mixes with the bulk factory oil fill and causes it to look like a "special break in oil".

Finally, check out this UOA of the factory fill on a new Miata. Again, we see the same high moly content on an engine that isn't even made by Honda.

 

Show it to me.

 

let me take a few minutes out of my day at work here and do a search. hold on sir.

 

I'm going to guess that you're thinking of the bulletin that also discusses the new Honda MTF....but I'll wait and see the results.

 

https://www.s2ki.com/forums/index.php?act=m...mage&img=216856

 

Thanks! I've been trying to find that, I bookmarked it. Still, this is wrong because the factory fill oil DOES NOT contain additives. I think this is re-enforced by the fact that they tell you to add regular 10w30 to the factory fill if the engine is low on oil. If they truly used an oil with special additives already in it don't you think they'd specify that during break in you are only to use "Honda xyz break in oil" to top off the factory fill?

It's the engine assembly lube that contains the extra moly content (or break in additives if you will). This obviously mixes with the factory fill. The piston rings, piston rod bearings, cam bearings, and crankshaft main bearings are all liberally lubricated with engine assembly lube at the factory, this is why I think they mention that the factory fill should not be drained. They appear to insinuate that the assembly lube continues to help the engine break in, again, this hasn't been proven even with numerous UOAs from many types of engines. Last but not least, this article is only referring to '00 and '01 models.

You'll also notice that this bulletin suggests to ONLY use 10w30 "for optimum fuel economy and year-round engine protection" when in reality the manual also specifies 5w40. The article contradicts itself, as it tells owners to refer to the manual to check the oil everytime the car is filled with gas but recommends that owners ONLY use 10w30 even though Honda OK'd 5w40 in the owners manual. Would this bulletin have us believe that the manual is only half right?

 

^
sure, those are good points to argue. but i don't care to argue those points.

the bulleting says there are additivies to help break-in...so it's not a myth.

other than that...i don't know what else to say.

 

With that logic then you must also believe that this is only concerning '00 and '01 model cars.

 

no, I can assume the article was written in 2001.