Blackstone Oil Report

[kayger12]

Here you go, Wash. Feel free to share your interpretation, please.

[Washburn]

Thanks for the full report.

holy moly! i have seen virgin oil analysis of the BMW oil and it's pretty heavy on Moly (Molybdenum [Mb]-anti-wear additive), very nice.

Lead - very low - NICE! (comes from bearings, mostly)

Like blackstone already said, all the numbers look good, but i wonder why they never commented on the fact that you added 1 qt of oil during the OC interval, which makes numbers look a bit better than reality, additives, TBN, Viscosity numbers etc etc, and the wear metal numbers, too.
( AFAIK, they didn't do a projected calculation taking the top-up 1 qt into account, and i don't think it would have been very different, I am just nit-picking) it's not a big concern, and I think you have a nicely wearing engine, and I am also currently doing a 8k mile interval, (using Syntec Euro 0w-30), that's the magic number of miles to get a good idea of how good the oil/engine/price benefit combo is playing out.

Next time, if you do a 8k mile analysis, perhaps you can ask them to make a comment on the amount of oil added during the run, and how it affects the numbers. BUT like i said, 1 qt in a 7qt capacity may not mean much at all, so don't let it take away from the fact that you have a nice UOA.

[kayger12]

Thanks for the full report.

holy moly! i have seen virgin oil analysis of the BMW oil and it's pretty heavy on Moly (Molybdenum [Mb]-anti-wear additive), very nice.

Like blackstone already said, all the numbers look good, but i wonder why they never commented on the fact that you added 1 qt of oil during the OC interval, which makes numbers look a bit better than reality, additives, TBN, Viscosity numbers etc etc, and the wear metal numbers, too.
( AFAIK, they didn't do a projected calculation taking the top-up 1 qt into account, and i don't think it would have been very different, I am just nit-picking) it's not a big concern, and I think you have a nicely wearing engine, and I am also currently doing a 8k mile interval, (using Syntec Euro 0w-30), that's the magic number of miles to get a good idea of how good the oil/engine/price benefit combo is playing out.

Next time, if you do a 8k mile analysis, perhaps you can ask them to make a comment on the amount of oil added during the run, and how it affects the numbers. BUT like i said, 1 qt in a 7qt capacity may not mean much at all, so don't let it take away from the fact that you have a nice UOA.

Very good. Thanks for the feedback, Wash. The 1qt added during this last run was due at least partially to a leaking VCG and Vanos job. Hoping I won't need to add as much this time around.

[az3579]

Very good. Thanks for the feedback, Wash. The 1qt added during this last run was due at least partially to a leaking VCG and Vanos job. Hoping I won't need to add as much this time around.

I had to add 1-1.5 quarts over the time of my last oil change (6k). What the heck?
I don't have a leaking VCG or VANOS...

[kayger12]

I had to add 1-1.5 quarts over the time of my last oil change (6k). What the heck?
I don't have a leaking VCG or VANOS...

Have you checked your oil filter housing gasket?


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[az3579]

Have you checked your oil filter housing gasket?


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There are no leaks that I see...

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[Washburn]

I had to add 1-1.5 quarts over the time of my last oil change (6k). What the heck?
I don't have a leaking VCG or VANOS...

Which oil were you using?

[kayger12]

There are no leaks that I see...

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Have a look here just to make sure.
http://www.e46fanatics.com/forum/sho...2&postcount=12

[kpro]

Thanks for sharing this Keith. I have a few cars I want to test and the old place we used to use here in Cbus shut its doors a couple of years ago.

I've been changing my oil every 7,500 mi. using BMW oil. I think I may do this analysis too, as I'm curious. I never check my oil on this car...baaaad habit, i know. My vanos problem isn't near as bad now that the oil was changed Monday...coincidence? ooops

[az3579]

Thanks Keith, will check it out.

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