UOA Corvette LS7 Redline 5w-30 Track Usage

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Hi BITOG members in for my annual UOA. Car is a 2008 Corvette Z06. Saw street miles and 6 track days and 5 autocross events. OLM read 42%. Oil was in the 250s for most of the events, but 2 of the days it got around 265F. I checked the oil pressures at 265F and they were right at the low limit for a hot LS7. Thus, for this oil change, I used the rest of my 5w-30 (2.3qt) and then moved to Redline 5w-40 and a K&N oil filter. Engine is pretty much stock, with the heads fixed. The run "#3" in the image is the first oil change after fixing the heads and replacing the exhaust valves. Has a Corsa axleback exhaust and K&N drop-in filter. I've read some stuff that the first run of Redline usually is a "cleanup" run and the wear metals usually show higher. Curious to see what the next run shows after it gets beat up some more at the track. I suspect Silicon is high because it's Redline and thats the anti-foam. Not sure how to do the code thing anymore, maybe a mod can help me out here.

#1 is Redline 5w-30 with AcDelco standard filter
#2 is M1EP 5w-30 and Mobil 1 filter https://bobistheoilguy.com/forums/threads/uoa-corvette-z06-ls7.319821/
#3 is M1 EP 5w-30 and Mobil 1 filter https://bobistheoilguy.com/forums/threads/uoa-08-corvette-z06-ls7-after-upgrading-heads.280888/

OIL Redline 5w-30 M1EP 5w30 M1EP 5w30
MILES IN USE 3.7k 3.3k 1.7k
MILES 59.7k 56.0k 49.5k
SAMPLE TAKEN 11/28/20 12/8/19 11/23/17
MAKE UP OIL 1.7QT 0 0

ALUMINUM 9 4 7
CHROMIUM 4 2 2
IRON 57 29 39
COPPER 2 1 2
LEAD 10 4 3
TIN 2 0 1
MOLYBDENUM 394 71 85
NICKEL 1 1 1
MANGANESE 1 0 1
SILVER 0 0 0
TITANIUM 9 6 11
POTASSIUM 0 1 1
BORON 118 68 88
SILICON 20 6 6
SODIUM 13 6 5
CALCIUM 2312 1011 941
MAGNESIUM 429 658 757
PHOSPHORUS 1031 619 705
ZINC 1150 713 789
BARIUM 0 0 0

INSOLUBLES 0.2 0.2 0.2
WATER 0 0 0
FLASHPOINT �F 425 385 415
SUS VIS 210�F 63.2 59.3 61.7
cSt @ 212�F 11.12 10.03 10.71
 

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  • 2020-12-11 Corvette UOA1024_1.jpg
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