Real UOA Data: Rotella Synth 5w40 w/ 5-hours of track time and 2200 street miles - Miata Turbo Forum - Boost cars, acquire cats.

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Old 10-15-2009, 06:05 PM   #1
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Default Real UOA Data: Rotella Synth 5w40 w/ 5-hours of track time and 2200 street miles

Not bad for $20/g oil. I think I'm going to keep running it and change it every 3 events or 3 months when combined with street driving. I knew a little fuel would make its way in but I'm pretty impressed considering I sustained 260*f oil temps at the track. It should only get better on wear when I bring the viscosity up.

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Old 10-15-2009, 06:24 PM   #2
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Actually, after further review, I'm a bit concerned about the fuel dilution. I now remember that I drove this ****** home rich as hell due to AFR problems at the track where it seems that heat soak may have been a problem. At least I have an idea of what's going on and can do more research on the next one.
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Old 10-15-2009, 06:31 PM   #3
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I'm just glad I wrote down your number before you edited.


Will holla at ya this weekend.



Seriously though...this is great oil in my experience. All the Kawasaki guys swore by it...but none of us had turbos.

I wonder if the fuel dilution would happen to any oil due to the AFRs you're running. How does this compare to previous UOAs on that front?

Otherwise it looks like it held up PRETTY DAMN WELL for $20 a change!
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Old 10-15-2009, 06:32 PM   #4
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I too am using this oil. Driving home with those rich AFRs most likely made the oil thin and high in fuel #.

I use it because the name rolls off the tongue nicely, and because I touch myself at night.
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Old 10-15-2009, 06:39 PM   #5
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Quote:
Originally Posted by gospeed81 View Post
ow does this compare to previous UOAs on that front?

Otherwise it looks like it held up PRETTY DAMN WELL for $20 a change!
This is my first analysis.

I don't know what to think about the iron.

Yeah, I'm pretty happy about it for the money, and I know that its didn't shear out too bad and although viscosity is low, its 40weight so I can afford some thinning. I'd run 5w30 if someone made an HDEO at a comperable price.

I'm going to do 2 or 3 events again, now that I have fuel worked out and see if it changes. IFI can get the fuel #'s in line I may consider a few events on Motul or Redline. I'd like to try the "super-ester" oil and see what it does, but I'm not exactly sure that it necessary with the high ZDDP #'s, although I'd like to see more moly.
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Old 10-15-2009, 06:42 PM   #6
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Quote:
Originally Posted by hustler View Post
This is my first analysis.
I thought you had analyzed other oils previously. I'm wondering how it compares to what you were running last year.
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Old 10-15-2009, 06:50 PM   #7
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Originally Posted by gospeed81 View Post
I thought you had analyzed other oils previously. I'm wondering how it compares to what you were running last year.
never, ever. I've read a lot, but never had a motor I cared enough about to send a sample in.
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Old 10-15-2009, 06:51 PM   #8
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I too am using this oil. Driving home with those rich AFRs most likely made the oil thin and high in fuel #.

I use it because the name rolls off the tongue nicely, and because I touch myself at night.
bring your camera over...I need to borrow it for the track. yeah, the track.
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Old 10-15-2009, 07:07 PM   #9
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bring your camera over...I need to borrow it for the track. yeah, the track.
The camera is going to be mounted to my bucket this weekend while I crush your lap times at Hallett in the FF.

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