Oil gone bad???
Thread Starter
Team Owner
Joined: Jan 2006
Posts: 20,800
Likes: 59
From: Tellico Village, Tn
St. Jude Donor '08
Oil gone bad???
Engine is a new 402 with Vortech S/C. First oil change at 500 miles, Mobil 1 syn, looked good. This oil was removed after 1500 miles, heavy black and reaked of carbon!!. Had pulled boost maybe ten times in 3rd or 4th, never any prolonged boosted pulls, or full out boosted runs. Don't understand why a new engine would have oil that looked like it came out an engine with 100k miles on it. Fear maybe it is some form of blow by?? Interested in any opinions or comments. Thanks in advance.
Benny
Benny
Melting Slicks
Joined: Jun 2004
Posts: 3,439
Likes: 6
From: Newark, DE
St. Jude Donor '06
Benny,
I have a 402 that runs the same oil (Mobil-1 15w50 ext-perf). I wouldn't worry about the smell... that's just what this new Mobil-1 formulation smells like after it has seen a few heat cycles. However, the black color after only 1500 miles seems excessive. Do you have a catch can? If not, consider adding one. Another thing to check would be that you don't have any air leaks before the throttle body. I believe that the P0101 code is deleted or maxxed out on blower cars, so you won't get any DIC warnings.
HTH (and sorry we won't be seeing you at The Block today).
I have a 402 that runs the same oil (Mobil-1 15w50 ext-perf). I wouldn't worry about the smell... that's just what this new Mobil-1 formulation smells like after it has seen a few heat cycles. However, the black color after only 1500 miles seems excessive. Do you have a catch can? If not, consider adding one. Another thing to check would be that you don't have any air leaks before the throttle body. I believe that the P0101 code is deleted or maxxed out on blower cars, so you won't get any DIC warnings.
HTH (and sorry we won't be seeing you at The Block today).
Thread Starter
Team Owner
Joined: Jan 2006
Posts: 20,800
Likes: 59
From: Tellico Village, Tn
St. Jude Donor '08
Originally Posted by Mr. Lucky
Benny,
I have a 402 that runs the same oil (Mobil-1 15w50 ext-perf). I wouldn't worry about the smell... that's just what this new Mobil-1 formulation smells like after it has seen a few heat cycles. However, the black color after only 1500 miles seems excessive. Do you have a catch can? If not, consider adding one. Another thing to check would be that you don't have any air leaks before the throttle body. I believe that the P0101 code is deleted or maxxed out on blower cars, so you won't get any DIC warnings.
HTH (and sorry we won't be seeing you at The Block today).
I have a 402 that runs the same oil (Mobil-1 15w50 ext-perf). I wouldn't worry about the smell... that's just what this new Mobil-1 formulation smells like after it has seen a few heat cycles. However, the black color after only 1500 miles seems excessive. Do you have a catch can? If not, consider adding one. Another thing to check would be that you don't have any air leaks before the throttle body. I believe that the P0101 code is deleted or maxxed out on blower cars, so you won't get any DIC warnings.
HTH (and sorry we won't be seeing you at The Block today).
Really wanted to make it, but my car is in the shop. The MAf blew up on a dyno pull, and they need a different pully on the T trim. I don't have a catch can, but have given it serious thought.
You guys have a godd/safe time today, and I'll see you on the next one.
Le Mans Master
Joined: Oct 2005
Posts: 7,088
Likes: 1,829
From: Metro Detroit Michigan
I think it's normal to soot up the oil rather quickly if you spend a lot of time in boost, with the rich mixtures that go along with this.
Since you haven't spent much time in boost though, it sounds like you're running rich when you shouldn't be.
Since you haven't spent much time in boost though, it sounds like you're running rich when you shouldn't be.
Thread Starter
Team Owner
Joined: Jan 2006
Posts: 20,800
Likes: 59
From: Tellico Village, Tn
St. Jude Donor '08
Originally Posted by Warp Factor
I think it's normal to soot up the oil rather quickly if you spend a lot of time in boost, with the rich mixtures that go along with this.
Since you haven't spent much time in boost though, it sounds like you're running rich when you shouldn't be.
Since you haven't spent much time in boost though, it sounds like you're running rich when you shouldn't be.
Thanks
Kind of new to the S/C game, and it is becoming a real learning process mixed with $$$
Benny
Pro
Joined: Nov 2001
Posts: 731
Likes: 26
From: Austin TX
I had a forged engine installed and noticed that the oil was really dirty after about a thousand miles. I've changed the oil a few times since then and the oil stays clean now.
Maybe it's the break-in lube they use to assembly the engine you're seeing?
I think you will see that the oil will stay cleaner after a few oil changes.
Good luck.
Maybe it's the break-in lube they use to assembly the engine you're seeing?
I think you will see that the oil will stay cleaner after a few oil changes.
Good luck.
Thread Starter
Team Owner
Joined: Jan 2006
Posts: 20,800
Likes: 59
From: Tellico Village, Tn
St. Jude Donor '08
Originally Posted by CAracer
I had a forged engine installed and noticed that the oil was really dirty after about a thousand miles. I've changed the oil a few times since then and the oil stays clean now.
Maybe it's the break-in lube they use to assembly the engine you're seeing?
I think you will see that the oil will stay cleaner after a few oil changes.
Good luck.
Maybe it's the break-in lube they use to assembly the engine you're seeing?
I think you will see that the oil will stay cleaner after a few oil changes.
Good luck.
Hope so, thanks
Life Time NCM #2196
Joined: Sep 2004
Posts: 82,599
Likes: 1,717
From: Converse TX
My Purple stuff does not get dirty as quick as the Mobil 1 and I run lots of boost between my oil changes. 100 miles dyno and then again at 500 miles dyno oil and then to RP and changed at 2k and then again at 2k, just starting to really change to a darker color, still changed as oil is cheaper than the motor
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Melting Slicks
Joined: Sep 2004
Posts: 3,178
Likes: 13
From: N. County/San Diego
Benny, if I recall correctly, there was a post/posts recently about PCV issues pertaining to the 402 strocker motor!
One of the symptoms was high oil consumption, makes me think your issue (possible oil contaminant) may be related in some way! Try a search or mabye some of the original posters will chime in!
Rick
One of the symptoms was high oil consumption, makes me think your issue (possible oil contaminant) may be related in some way! Try a search or mabye some of the original posters will chime in!
Rick
Last edited by R.P.; Sep 24, 2006 at 05:30 PM.
Thread Starter
Team Owner
Joined: Jan 2006
Posts: 20,800
Likes: 59
From: Tellico Village, Tn
St. Jude Donor '08
Originally Posted by R.P.
Benny, if I recall correctly, there was a post/posts recently about PCV issues pertaining to the 402 strocker motor!
One of the symptoms was high oil consumption, makes me think your issue (possible oil contaminant) may be related in some way! Try a search or mabye some of the original posters will chime in!
Rick
One of the symptoms was high oil consumption, makes me think your issue (possible oil contaminant) may be related in some way! Try a search or mabye some of the original posters will chime in!
RickActually there has been little if any oil consumption.