I assume that Blackstone Labs has now changed their statement about never seeing a "break-in oil" ?

 

[QUOTE]

 

I have always used a moly assembly lube when building an engine and I assume this is where it comes from. When they send a new short block it does not come with oil but I am sure it breaks in the same way. I am still not convinced there is a 'break-in' oil but as I suggested over two years ago, the moly additive would certainly be present in a new engine.

 

cdelena ........ the moly assembly lube that you used, is that like Permatex's Anti-Seize Lubricant ? Or is there something different today ? Years ago when I rebuilt my GTO's 389 (several times), I was told to use anti-seize lube to pre-lube the moving parts for protection at star up time. It would then breack down into the oil and help break in the engine.

 

[QUOTE]Originally posted by StwoK
[B]cdelena ........

 

Just for comparison, the left column is what Utah posted - the middle is what I show on my report at 16000 miles, after 8k miles on Mobil1 (third oil in the engine, first change was at 4500 miles, second was Mobil1 at about 8000 miles) and the right is the report's "universal averages" (don't know if they are for all vehicles or just S2Ks):

Utah Mine Univ. Ave.
Al: 8 (Aluminum) 10 8
Cr: 1 (Chromium) 2 1
Fe: 15 (Iron) 25 15
Cu: 13 (Copper) 9 13
Pb: 3 (Lead) 2 3
Sn: 1 (Silicon) 10 29
Mo: 267 (Molybdenum) 8 267
Ni: 1 (Nickel) 1 1
Mn: 3 (Manganese) 10 3

There are some possible discrepancies here since the sample was NOT pulled during a change - I opened the drain and tried to get the the sample after a short (1 sec.) release so it wouldn't have sludge in it but I don't know how polluted the sample may have been. Shouldn't be too bad but...

The Comments section says:

Universal averages show typical wear metals for an oil from this type engine after a routine oil run. Your oil was in use 8,000 miles, far longer than a routine oil run for the type, (avg oil use for the type is 3,775 mi) and we found all wear from the engine around average levels and in the correct balance to show normal mechanical parts inside. Air and oil filtration were functioning okay. This was Mobil 1 5W/30 oil with no gas or anti-freeze in it. The oil use interval was okay but possibly a little long. Try 6,000 mi for the next sample. TBN = 7.5

End of Comments

I will use 6k miles for the next sample just to get a feel for it and to build some more history faster. I should also note the comments about air filtration since I was using a JR filter and there has been negative comments about such filters and their ability to properly filter on this board. It may be that for new filters in an extremely dusty area that could be true but under normal street use (we ain't off-roading these things), JR/K&N filters would still seem to be the best price/performance mods to be done and no impact on longevity.

I should also note that I autocross this car successfully and use the rev limiter rather than strict adherence to the redline...

 

[QUOTE]Originally posted by jguerdat
[B]Just for comparison, the left column is what Utah posted - the right is what I show on my report at 16000 miles, after 8k miles on Mobil1 (third oil in the engine, first change was at 4500 miles, second was Mobil1 at about 8000 miles):

Al: 8

 

Stoopid board. Tabs apparently aren't allowed - they got me to the Send button instead. Sorry about the formatting - I used lotsa spaces but they were stripped...

Check the edited message above - it'll make much more sense now if you can see past the formatting issues.

 

jschmidt ...... For the last 30 years, I've always used Permatex Anti-Seize lube the only thing that has changed is the container, it is now plastic. Permatex's Anti-Seize has always had a high heat tolerance (1600 F) and silver-metalic in color. It is a lite weight grease that is brushed onto the surface.

 

[QUOTE]Originally posted by StwoK
[B]cdelena ........