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#4529192 - 09/29/17 09:05 AM 2017 Corvette / Mobil 1 5w30 / 5.6k mi
dparm Offline


Registered: 04/19/10
Posts: 13466
Loc: Chicago, IL
I changed this out when the OLM read 25% and it had about seven track days on it. Blackstone commented that the aluminum was up a bit but called it "barely out of spec", and they also noted that the viscosity was just barely out of grade. Although iron was up from last time, it's actually way down on a per-mile basis.

I had asked if I should consider something like 0w40 or even 15w50 (which is what GM suggests for track use), but they didn't think that would really make a difference. I think I am going to try a shorter interval next time, but I welcome opinions. I still have one more free oil change from GM.



Code:
OIL             M1 5w30  M1 5w30
MILES IN USE    5,651    741     
MILES           6,392    741   
SAMPLE TAKEN    9/22/17  4/12/17  

ALUMINUM        10       3        
CHROMIUM        2        1        
IRON            53       48       
COPPER          13       28       
LEAD            1        1       
TIN             0        0        
MOLYBDENUM      76       84       
NICKEL          0        0        
MANGANESE       2        2        
SILVER          0        0        
TITANIUM        0        0        
POTASSIUM       5        10       
BORON           54       106       
SILICON         40       74        
SODIUM          5        7       
CALCIUM         956      1043     
MAGNESIUM       682      624      
PHOSPHORUS      627      692      
ZINC            733      753     
BARIUM          0        0
     
INSOLUBLES      0.1      -      
WATER           0        0        
FLASHPOINT F   390      SHORT      
SUS VIS 210F   54.8     -
cSt @ 212F     8.71     SHORT
TBN             4.6      6.2
TAN             4.7      1.9
_________________________
2017 Chevrolet Corvette Grand Sport

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#4529206 - 09/29/17 09:20 AM Re: 2017 Corvette / Mobil 1 5w30 / 5.6k mi [Re: dparm]
Danno Offline


Registered: 10/07/12
Posts: 1987
Loc: Northern Ontario, Canada
Engine is still breaking in. So far, so good.
_________________________
2016 Sorento SX V6 AWD
2015 KIA RIO SX
2010 Mazda 3 2.0L
2009 Venza V6 AWD
2013 Sonata 2.4L RIP in write-off crash

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#4529219 - 09/29/17 09:40 AM Re: 2017 Corvette / Mobil 1 5w30 / 5.6k mi [Re: dparm]
danielLD Offline


Registered: 08/12/17
Posts: 226
Loc: Chicago
I'd ditch the M1 and get a better oil.

Why increase viscosity? Increasing viscosity increases wear if it's not needed. Consider getting better UOA testing as well.

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#4529240 - 09/29/17 10:05 AM Re: 2017 Corvette / Mobil 1 5w30 / 5.6k mi [Re: dparm]
bigj_16 Offline


Registered: 07/03/17
Posts: 1267
Loc: Douglas County, Colorado
Change this next round out at 4000 miles, do a UOA, and see how it does.

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#4529241 - 09/29/17 10:05 AM Re: 2017 Corvette / Mobil 1 5w30 / 5.6k mi [Re: danielLD]
kschachn Offline


Registered: 12/26/05
Posts: 9379
Loc: Upper Midwest
Originally Posted By: danielLD
I'd ditch the M1 and get a better oil.

Why increase viscosity? Increasing viscosity increases wear if it's not needed. Consider getting better UOA testing as well.

Hey welcome back, you were gone there for a while. Were you busy?
_________________________
1994 BMW 530i, 227K
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#4529247 - 09/29/17 10:09 AM Re: 2017 Corvette / Mobil 1 5w30 / 5.6k mi [Re: kschachn]
danielLD Offline


Registered: 08/12/17
Posts: 226
Loc: Chicago
Originally Posted By: kschachn
Originally Posted By: danielLD
I'd ditch the M1 and get a better oil.

Why increase viscosity? Increasing viscosity increases wear if it's not needed. Consider getting better UOA testing as well.

Hey welcome back, you were gone there for a while. Were you busy?


Lol, thanks! I come and go, you know? I get in these moods sometimes, where I'll check the forums and see what's going on, chime in and then back to work/etc.

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#4529254 - 09/29/17 10:13 AM Re: 2017 Corvette / Mobil 1 5w30 / 5.6k mi [Re: dparm]
rooflessVW Offline


Registered: 12/24/11
Posts: 4025
Loc: North Carolina
I would personally run M1 0W-40 year round, however...

What type of track days? Are you doing HPDE's or actual racing? If you're doing actual racing or the HPDE sessions are much longer than 15 minutes, I would run the 15W-50. It's not a terribly thick oil for a 50, and you could run it with no issues for the warmer six months out of the year.
_________________________
"Zed's dead baby, Zed's dead."

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#4529259 - 09/29/17 10:17 AM Re: 2017 Corvette / Mobil 1 5w30 / 5.6k mi [Re: rooflessVW]
danielLD Offline


Registered: 08/12/17
Posts: 226
Loc: Chicago
Originally Posted By: rooflessVW
I would personally run M1 0W-40 year round, however...

What type of track days? Are you doing HPDE's or actual racing? If you're doing actual racing or the HPDE sessions are much longer than 15 minutes, I would run the 15W-50. It's not a terribly thick oil for a 50, and you could run it with no issues for the warmer six months out of the year.


I guess I'll just ask because I always find it interesting that people always want to go thicker to reduce wear, which is contrary what me and Dyson have proved.

So why don't we go to a SAE70 weight?

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#4529263 - 09/29/17 10:21 AM Re: 2017 Corvette / Mobil 1 5w30 / 5.6k mi [Re: danielLD]
rooflessVW Offline


Registered: 12/24/11
Posts: 4025
Loc: North Carolina
Originally Posted By: danielLD
I guess I'll just ask because I always find it interesting that people always want to go thicker to reduce wear, which is contrary what me and Dyson have proved.

So why don't we go to a SAE70 weight?

Because his manual SPECIFICALLY calls out Mobil 1 15W-50 as the oil to use for "high performance driving."
_________________________
"Zed's dead baby, Zed's dead."

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#4529267 - 09/29/17 10:22 AM Re: 2017 Corvette / Mobil 1 5w30 / 5.6k mi [Re: rooflessVW]
dparm Offline


Registered: 04/19/10
Posts: 13466
Loc: Chicago, IL
Originally Posted By: rooflessVW
I would personally run M1 0W-40 year round, however...

What type of track days? Are you doing HPDE's or actual racing? If you're doing actual racing or the HPDE sessions are much longer than 15 minutes, I would run the 15W-50. It's not a terribly thick oil for a 50, and you could run it with no issues for the warmer six months out of the year.



The car is spec'd for 5w30, and M1 is the factory fill. These are free oil changes from GM, so for now, I will just stick with that. I had considered the 0w40 after the free changes run out.

These are 20-30 minute HPDE sessions, typically 4 or 5 per track day.
_________________________
2017 Chevrolet Corvette Grand Sport

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#4529273 - 09/29/17 10:26 AM Re: 2017 Corvette / Mobil 1 5w30 / 5.6k mi [Re: dparm]
rooflessVW Offline


Registered: 12/24/11
Posts: 4025
Loc: North Carolina
With the track time, I'd be running 15W-50 for the warm half of the year and 0W-40/5W-30 for winter.

Or, as previously mentioned, stick with the 5W-30 into next year and see how things look as the engine runs in.
_________________________
"Zed's dead baby, Zed's dead."

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#4529277 - 09/29/17 10:28 AM Re: 2017 Corvette / Mobil 1 5w30 / 5.6k mi [Re: rooflessVW]
dparm Offline


Registered: 04/19/10
Posts: 13466
Loc: Chicago, IL
Originally Posted By: rooflessVW
With the track time, I'd be running 15W-50 for the warm half of the year and 0W-40/5W-30 for winter.

Or, as previously mentioned, stick with the 5W-30 into next year and see how things look as the engine runs in.



I don't drive the car between November 1 and April 1. It sits in a garage.
_________________________
2017 Chevrolet Corvette Grand Sport

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#4529665 - 09/29/17 06:23 PM Re: 2017 Corvette / Mobil 1 5w30 / 5.6k mi [Re: rooflessVW]
danielLD Offline


Registered: 08/12/17
Posts: 226
Loc: Chicago
Originally Posted By: rooflessVW
Originally Posted By: danielLD
I guess I'll just ask because I always find it interesting that people always want to go thicker to reduce wear, which is contrary what me and Dyson have proved.

So why don't we go to a SAE70 weight?

Because his manual SPECIFICALLY calls out Mobil 1 15W-50 as the oil to use for "high performance driving."


roofless, I suggest you get a roof and cap your anger. As an industry professional, not some random guy on a forum, because the manual says something means nothing. That manual was written by GM, because when GM engineers sit down with the tribology dept.(GM is one of few that has official tribologist on staff) they have to know what they can recommend for 90% of people who will buy off the shelf oil.

I track my RC F on 30W oil because I use a quality oil. That M1 shears to a 30W within a few hours, hence why GM has to say start with a 50W. Because they know it will be a 30W quickly, not because he needs a 50W.

Also roofless, you have failed to prove that increasing to a thicker weight reduces wear. Something I HAVE personally done over thousands of UOAs.

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#4529780 - 09/29/17 08:04 PM Re: 2017 Corvette / Mobil 1 5w30 / 5.6k mi [Re: danielLD]
rooflessVW Offline


Registered: 12/24/11
Posts: 4025
Loc: North Carolina
Originally Posted By: danielLD
roofless, I suggest you get a roof and cap your anger. As an industry professional, not some random guy on a forum, because the manual says something means nothing. That manual was written by GM, because when GM engineers sit down with the tribology dept.(GM is one of few that has official tribologist on staff) they have to know what they can recommend for 90% of people who will buy off the shelf oil.

I track my RC F on 30W oil because I use a quality oil. That M1 shears to a 30W within a few hours, hence why GM has to say start with a 50W. Because they know it will be a 30W quickly, not because he needs a 50W.

Also roofless, you have failed to prove that increasing to a thicker weight reduces wear. Something I HAVE personally done over thousands of UOAs.

I can tell you're going to be real fun to have around here.
_________________________
"Zed's dead baby, Zed's dead."

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#4529792 - 09/29/17 08:14 PM Re: 2017 Corvette / Mobil 1 5w30 / 5.6k mi [Re: danielLD]
dparm Offline


Registered: 04/19/10
Posts: 13466
Loc: Chicago, IL
Originally Posted By: danielLD
I'd ditch the M1 and get a better oil.

Why increase viscosity? Increasing viscosity increases wear if it's not needed. Consider getting better UOA testing as well.



What would you consider "better" than the M1 5w30? That's a pretty nebulous statement.
_________________________
2017 Chevrolet Corvette Grand Sport

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