Castrol GC 0W30, 7350 Miles, BMW X5 4.4 v8

[chefwong]

2nd run of GC in my BMW X5 4.4 V8
Odometer just hit 31,250 miles with FP on every fillup. I did finish up a bottle of RL S1 I had lying around also - at 1 oz /5 gallon treatment rates also. The last OCI was back in Spring and I changed both the air and oil filters. The previous run before that was GC and Redline 5W30.

Love to hear your thoughts on this UOA

The last UOA I have prior to this would be Redline 5W30. For comparion, please see below

[ November 18, 2005, 11:38 PM: Message edited by: chefwong ]

 

[ekpolk]

Chef:

I'd like to read your data, but I can't. I'm staying in primitively equipped quarters on base back in New Orleans, and I'm presently using a very slow cell phone modem. Compassion for slow connection users, as well as links that inevitably go dead after a while are the reasons why the board rules call for typing in of date manually. At the top of the UOA forum, you will find this little admonition: "Please type data.No outside links for data.ANALYSIS RESULTS ONLY!"

EDIT: I hope I don't sound like I'm picking on you, but if you do post images (for other purposes, of course), please use a graphics or photo editing program to resize them to somewhere in the neighborhood of 600-800 pixels wide. This will avoid the problem of images so big that they force readers to scroll back and forth to see the entire image. I use a relatively small notebook computer, so your image may be fine on some larger screens, but it's a scroller on mine. I usually set my images at 600 pix wide, and let the program "auto-set" the height to preserve proportions.

 

[Pablo]

Pb spikeage

 

[Bryanccfshr]

What type of use is this subject too? You consistantly are inconsistant. Different labs, different oils...
TBN seems depeleted quickly in this motor and in your application.

 

[chefwong]

It's a daily driver. I would say 80% highway / 20% city but rush hour traffic on NYC highways can be stop/go at times.

I swapped to GC to see how that would trend and I'm currently on my 3rd run of GC. Third OCI, I used GC with LC, fresh oil and air filter. I plan to sample at 3.5K just to see what's up.

As far as different labs, a friend of mine has always told me that he's had really great experiances with Butler. Once I used up the kit's I had with Blackstone, I bought some kits from Mark over at Butler. It was my way of giving Butler Business after so much that Mark had contributed to the forum