Mobil 1 0w40 - 14,828 mi - 2007 750i

[jca]

This is the second sample that was tested for this engine. There was also a short run of Synpower 5w30 in between the two that wasn't tested since it won't be used again. The 0w40 did a great job as far as I can tell. Nickel is kind of odd but I don't know what that might indicate. Silicon was amazing again at 3, but the intake system is a work of art on this thing so maybe not that surprising. CBS indicated 4,500 miles left when it was changed.

Comments: Good call on letting us know about the Valvoline; we did find some residual sodium in this sample, and if you hadn't mentioned it, we probably would have at least raised the possibility of coolant. Since we know where this sodium came from though, we can cross that worry off the list. We're not sure where nickel is coming from in this engine, but it's a fairly unusual find. With everything else looking so good, it's hard to call it a major problem, but check back to monitor. The TBN was still good, at 3.3, so try 16K-17K miles again, or let the CBS guide you. Nice engine!
Code:
Oil M1 0w40 VV 5w30 BMW 5w30

MI/HR on Oil 14,828 7,832 16,817

MI/HR on Unit 85,526 70,698 62,866

Sample Date 4/2/12 9/27/11 6/24/11

Make Up Oil 0.5 0 0 AVERAGES



ALUMINUM 3 NT 5 5

CHROMIUM 0 NT 0 0

IRON 9 NT 15 15

COPPER 2 NT 4 5

LEAD 0 NT 1 2

TIN 2 NT 0 1

MOLYBDENUM 80 NT 181 127

NICKEL 8 NT 4 0

MANGANESE 1 NT 5 3

SILVER 0 NT 0 0

TITANIUM 0 NT 0 0

POTASSIUM 3 NT 0 4

BORON 94 NT 60 51

SILICON 3 NT 4 6

SODIUM 50 NT 15 9

CALCIUM 2862 NT 2366 2232

MAGNESIUM 14 NT 19 156

PHOSPHORUS 810 NT 903 828

ZINC 951 NT 1286 1023

BARIUM 0 NT 0 0





PROPERTIES

SUS Viscosity @ 210°F 69.7 NT 72.0

cSt Viscosity @ 100°C 12.88 NT 13.5

Flashpoint in °F 400 NT 370

Fuel %
Antifreeze % 0.0 NT 0.0

Water % 0.0 NT 0.0

Insolubles % 0.1 NT 0.2

TBN 3.3 NT 2.1

 

[JHZR2]

Cant beat those numbers!

 

[Bluestream]

Good car, good oil. Thanks for posting!

 

[JHZR2]

Cant beat those numbers!

 

[Gene K]

If the Nickel was from valve stems, valve tips or rings I would expect to see Chromium. Could be from high strength steel parts like camshaft, crank journals or piston pins but I dont see enough of the other metals that would be alloyed.

My best guess would be some kind of bearing overlay. It might be characteristic of these cars but if the universal average is from 2007 750i as opposed to "7-Series" then it doesnt appear to be.

 

[simple_gifts]

Quote:

Cant beat those numbers!


So I've heard..... 8)

 

[HTSS_TR]

Clearly Mobil 1 0W40 is capable of long OCI, as long as mostly highway miles.

 

[Capa]

Wow, what stellar results!

 

[Balla]

Very Nice!

But I just can make myself run oil that long...I like getting my hands dirty way too often. lol

 

[CATERHAM]

Nice report.
Was this the SN version of M1 0W-40?
I agree you should be able to run this oil somewhat longer this time.
As a point of interest the BMW 5W-30 IMO was run too long.
Yes the TBN was done but the oil was also becoming seriously oxidized.

 

[jca]

Originally Posted By: CATERHAM
Nice report.
Was this the SN version of M1 0W-40?

This was 5 qts of SM with 4 qts of SN. There's 8.5 qts of SN in there now. I agree about the previous run, that's why I cut this one down to 15k which is probably enough anyway. I don't need to get every last mile out of it. Turns out the 0w40 would have done better at 17k, but you don't know until you try.

 

[ChrisD46]

Try doing that OCI with an engine which has a 4.5 - 5.0 qrt. sump.

 

[buster]

Nice report!

 

[DemoFly]

Originally Posted By: ChrisD46
Try doing that OCI with an engine which has a 4.5 - 5.0 qrt. sump.

Speaking of which, it might be nice to have that required in titles.

First post after 4 years of lurking.

 

[steve20]

Originally Posted By: DemoFly
Originally Posted By: ChrisD46
Try doing that OCI with an engine which has a 4.5 - 5.0 qrt. sump.

Speaking of which, it might be nice to have that required in titles.

First post after 4 years of lurking.


GREAT IDEA

Welcome Aboard!!!!!

 

[steve20]

nice isnolubles too----.2 and .1 after 15K miles looks like the Mann HU gets the job done

 

[Brons2]

The nickel is proably from the Alusil cylinder liners.

 

[OVERKILL]

Originally Posted By: Brons2
The nickel is proably from the Alusil cylinder liners.


You are thinking of Nikasil are you not? Alusil has no nickel in it.