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2017 Corvette / 3k / ACDelco Dexron LS 75w90 #4463993
07/19/17 01:23 PM
07/19/17 01:23 PM
Joined: Apr 2010
Posts: 13,534
Chicago, IL
dparm Offline OP
dparm  Offline OP
Joined: Apr 2010
Posts: 13,534
Chicago, IL
Code:
OIL             ACDelco Dexron LS 75w90
MILES IN USE    2,958 
MILES           2,958  
SAMPLE TAKEN    07/03/17 

ALUMINUM        40       
CHROMIUM        1      
IRON            107    
COPPER          3    
LEAD            1    
TIN             0        
MOLYBDENUM      1       
NICKEL          2        
MANGANESE       7        
SILVER          0     
TITANIUM        0     
POTASSIUM       5     
BORON           56   
SILICON         7      
SODIUM          9    
CALCIUM         11     
MAGNESIUM       4    
PHOSPHORUS      2299   
ZINC            20     
BARIUM          3
     
INSOLUBLES      0.2     
WATER           0.0     
FLASHPOINT F   390     
SUS VIS 210F   73.7    
cSt @ 212F     13.93



Chevy requires that the rear axle fluid is changed after the first competitive driving even/track day/etc, so that's what I did. They also specify that you should change it every 24 hours of this type of use which would work out to about once a year for me.

Blackstone highlighted that the aluminum was high but probably because it was part of break-in. Nothing else looks out of whack here and I'm sure it would've been fine to run for the whole year, but I would rather play it safe than deal with a denied warranty claim at some point.


2017 Chevrolet Corvette Grand Sport
Re: 2017 Corvette / 3k / ACDelco Dexron LS 75w90 [Re: dparm] #4464043
07/19/17 02:01 PM
07/19/17 02:01 PM
Joined: Dec 2013
Posts: 3,686
Massachusetts
turtlevette Offline
turtlevette  Offline
Joined: Dec 2013
Posts: 3,686
Massachusetts
Did that smell like grapes? I didn't see any Welch's in the analysis.


USA-1
Re: 2017 Corvette / 3k / ACDelco Dexron LS 75w90 [Re: turtlevette] #4464094
07/19/17 03:17 PM
07/19/17 03:17 PM
Joined: Apr 2010
Posts: 13,534
Chicago, IL
dparm Offline OP
dparm  Offline OP
Joined: Apr 2010
Posts: 13,534
Chicago, IL
Originally Posted By: turtlevette
Did that smell like grapes? I didn't see any Welch's in the analysis.




It did not have the typical sulfur odor I am used to from gear lube.


2017 Chevrolet Corvette Grand Sport
Re: 2017 Corvette / 3k / ACDelco Dexron LS 75w90 [Re: dparm] #4464121
07/19/17 03:35 PM
07/19/17 03:35 PM
Joined: Oct 2014
Posts: 11,816
Idaho
CT8 Offline
CT8  Offline
Joined: Oct 2014
Posts: 11,816
Idaho
Clean oil is happy oil.


"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf

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