2006 Pontiac Vibe - AMSOIL 5W30 XLF - 14,000 km

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Jun 8, 2011
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Mississaga, On
Hi all,

Second UOA for this OCI - First one is here:
http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=2529291#Post2529291

I changed the oil and filter since XL was about a month overdue on time ended up running it out to 14,000-km/7-months over the winter.

This sample I took from the oil stream out of the pan after letting it drain for 5 seconds. The previous sample was from the dipstick fill tube - I'm not sure I got the tube deep enough into the crank case on the first sample but it seemed to be mixed up enough.

Everything is as I would expect it except for the drop in Boron - not sure what that could indicate.
No makeup oil added for either sample.

Put XLF and the Mann filter back in the vibe for the summer. The plan is to run that until October and then go up to the signature series for the winter keeping 6 month OCI's because of the fuel dilution.

Code:


* = Severity 1

** = Severity 2

*** = Severity 3



12-02-06 12-04-07

Iron 4 9

Chromium 0 0

Nickel 0 0

Aluminum 3 2

Copper 0 0

Lead 0 0

Tin 0 0

Cadmium 0 0

Silver 0 0

Vanadium 0 0

Silicon 8 12

Sodium 9 20

Potassium 0 0

Titanium 0 0

Molybdenum 67 63

Antimony 0 0

Manganese 0 0

Lithium 0 0

Boron 121 58 *

Magnesium 8 7

Calcium 2249 2068

Barium 0 0

Phosphorous 655 537

Zinc 749 615

Fuel Dilution 2.9% 3.1% *

Vis @100C 9.1 9.4

TBN 3.26 2.03 ***

Oxidation 11 13

Nitration 24 23



Lube Time 8,884 14,083 km

Unit Time 180,198 km

Quote:
Base Number is SIGNIFICANTLY LOW. FUEL DILUTION is at a MODERATE LEVEL; FUEL DILUTION possibly caused by excessive idling; Boron is slightly low for this lubricant. Lubricant and filter change acknowledged;
 
Almsot 9k miles, and single-digit wear over a Canadian winter.

NOTHING to complain about there!
 
Fuel dilution is up and yet is not affecting wear at all!

Very nice. Good TBN left too. I don't agree with the severity 3 (***) on the TBN - plenty of mileage left in that oil. Could have gone perhaps to 20k-km ???

Nice Amsoil UOA performance!
 
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