Mobil1 0w40: LS7 Corvette Z06

[Dirty_Howie]

Okay, here it is. My first ever UAO. The motor has 10K miles and 4 track days. The oil had 4250 miles and 2 track days

They seem to like the wear metals but mention the high aluminum although it doesn't concern them. Also the chromium is a little higher than normal.

Can anyone explain this?

DH

 

[LargeCarManX2]

Your big engine only has 10K on it, you really have a fantastic report for such a young engine. You might be able to eventually do 7.5K OCI's when all is settled.

 

[MarkM66]

What happened to your first engine?

 

[Jtgrant]

can't see the uoa

what happened to the first engine?

 

[tig1]

The acceptable level for Alum is 10-30 PPM. Your good.

 

[Dirty_Howie]

Originally Posted By: LargeCarManX2
Your big engine only has 10K on it, you really have a fantastic report for such a young engine. You might be able to eventually do 7.5K OCI's when all is settled.


Thanks, appreciate that.

DH

 

[Dirty_Howie]

Originally Posted By: MarkM66
What happened to your first engine?


Blew up with 87K miles and 30 track days.

DH

 

[Dirty_Howie]

Originally Posted By: Jtgrant
can't see the uoa

what happened to the first engine?


Its there and others are seeing it ??????

DH

 

[Dirty_Howie]

Originally Posted By: tig1
The acceptable level for Alum is 10-30 PPM. Your good.


Thanks. Do you have any input on the Chromium ??

DH

 

[tig1]

Originally Posted By: Dirty_Howie
Originally Posted By: tig1
The acceptable level for Alum is 10-30 PPM. Your good.


Thanks. Do you have any input on the Chromium ??

DH


Chrom is also 10-30 PPM.

 

[OVERKILL]

Looks good for a fresh mill with that kind of use

Nothing stands out as being out of line. TBN is high, fuel is low. All-in-all, a good showing.

 

[mrcoolguy]

Results look great!

 

[dnewton3]

I'd say this UOA looks good for track use, and low miles.


On a separate note ...
Originally Posted By: Dirty_Howie
Originally Posted By: MarkM66
What happened to your first engine?


Blew up with 87K miles and 30 track days.

DH

I realize that this is "old" and not directly related to the current posted UOA, but what happend to "blow it up"? Was it over-revving, oil starvation, etc? What oil brand/grade history was present in the "old" engine?

Here's the reason I ask ...
Many times some people might do one of three things:
1) credit oil for things it's not capable of
2) discredit oil for things that were not it's fault
3) presume some other lube would have or would not have saved the engine from doom

 

[Dirty_Howie]

Originally Posted By: tig1
Originally Posted By: Dirty_Howie
Originally Posted By: tig1
The acceptable level for Alum is 10-30 PPM. Your good.


Thanks. Do you have any input on the Chromium ??

DH


Chrom is also 10-30 PPM.


Thanks

DH

 

[Dirty_Howie]

Originally Posted By: OVERK1LL
Looks good for a fresh mill with that kind of use

Nothing stands out as being out of line. TBN is high, fuel is low. All-in-all, a good showing.


Thanks for the review

DH

 

[Dirty_Howie]

Originally Posted By: mrcoolguy
Results look great!


Appreciate that. I'm starting to feel good that no one has anything negative to comment on in this UAO.

DH

 

[Dirty_Howie]

Originally Posted By: dnewton3
I'd say this UOA looks good for track use, and low miles.


On a separate note ...
Originally Posted By: Dirty_Howie
Originally Posted By: MarkM66
What happened to your first engine?


Blew up with 87K miles and 30 track days.

DH

I realize that this is "old" and not directly related to the current posted UOA, but what happend to "blow it up"? Was it over-revving, oil starvation, etc? What oil brand/grade history was present in the "old" engine?

Here's the reason I ask ...
Many times some people might do one of three things:
1) credit oil for things it's not capable of
2) discredit oil for things that were not it's fault
3) presume some other lube would have or would not have saved the engine from doom



First engine had 87K and 30 track days. GM replaced motor so I never found out what failed. There were 2 holes in the block. Usually this means a droped valve in these motors. I was using Mobil 5w30. Track temps would be 280+

Decided to go with the Mobil 0w40 for its better additive package and better protection by the 40w during track events.

Not saying one way or the other if the 5w30 contributed or if the 0w40 will prevent a similar failure. Just figure it can't be detrimental to run this oil with my usage of this car.

DH

 

[buster]

Mobil 1 0w40 is used in the LS7 in Europe.

 

[Loobed]

The copper is incredibly low for an LS engine that only has 10,000 miles. I might have to try M-1 0-40 in my truck.

 

[CATERHAM]

Looks fine for a new engine.

What maximum oil temp's and oil pressure readings at max' rev's do you see at the track with the M1 0W-40?