[eyeballeater]

Well here's the report. But i shouldn't worry yet.

*Follow up email*
Armin,

Thanks for the email. The fuel likely diluted the oil a little. This is
more in the 5W/20 range than the 5W/30. That lower viscosity shouldn't hurt
anything, but the fuel is still something to monitor. Let me know if you
have any other questions and have a great day.

 

[KFUDGE88]

hmmmm makes me want to send mine in too just to be safe. What was the price to send it in?

 

[eyeballeater]

Go to their site and fill out the request form. They'll sent you the container and instructions for free. Once you mail it back and select your payment method, they'll charge you. I think it was $22 or $25 dollars.

 

[tsduke]

I just changed my oil today and got a sample ready to send them. I was gonna use it for my truck but decided I really wanna know how the Nox oil is. I can get a new sample kit for my truck.

Was that factory fill oil then?

 

[eyeballeater]

Yup, it was factory fill.

 

[cottonseed]

I just requested the sample kit, im kinda curious on whats in my oil if anything.

 

[dwendt44]

Except for the fuel in the oil, that report looks good.
The factory fill is high in the good stuff their using these days (calcium, zinc).
The break in metals should drop a bunch the next time and again after the third oil change.

You've got proof if you push the dealer to fix it.

 

[Bobby J]

So why would there be fuel in the oil?

 

[RIT333]

So why would there be fuel in the oil?

Most likely cause is the HPFP is leaking. A problem with some Theta Platform cars with Direct Injection. Do a search for more info.

 

[GARYD]

Amsoil also sells an oil analysis kit for $26 including postage. The lab, Oil Analyzers, is in Indiana. I think if you suspect there is an over abundance of gas in your oil, get a kit and send it in. Good piece of mind. You'll know one way or another. Can't wait to get mine back. I didn't notice anything out of the ordinary.

 

[tsduke]

Except for the fuel in the oil, that report looks good.
The factory fill is high in the good stuff their using these days (calcium, zinc).
The break in metals should drop a bunch the next time and again after the third oil change.

You've got proof if you push the dealer to fix it.

Where do you get this info? From what I've been told the factory fill in 2011 is nothing more than the AC Delco Syn Blend(Dexos1)

 

[dwendt44]

I've been a daily and consistent reader of 'bobistheoilguy.com' for years.
The quality of oil generally is debated ad nausium.

http://www.bobistheoilguy.com/forums/ubbthreads.php

The factory fill is a synthetic blend. A notch above the usual stuff they dump in there at the factory. :shrug:

 

[dwendt44]

Most likely cause is the HPFP is leaking. A problem with some Theta Platform cars with Direct Injection. Do a search for more info.

The problem seems to show up mostly in the I4 engine.
Raw fuel washes down past the rings into the oil. The culprit seems to be the fuel pump as that's what the 'fix' they are using to correct.
Overpowering the injectors??

 

[eyeballeater]

Just a follow up email I got today

Armin,

Thanks for the email. The fuel likely diluted the oil a little. This is
more in the 5W/20 range than the 5W/30. That lower viscosity shouldn't hurt
anything, but the fuel is still something to monitor. Let me know if you
have any other questions and have a great day.

 

[bballr4567]

4.3% is quite a bit for the mileage you have on the engine. What is the driving you do? What was left on the OLM?

Im thinking of sending off a kit when we change the oil next in the fall.

Have you forwarded this to GM Powertrain?

 

[eyeballeater]

4.3% is quite a bit for the mileage you have on the engine. What is the driving you do? What was left on the OLM?

Im thinking of sending off a kit when we change the oil next in the fall.

Have you forwarded this to GM Powertrain?

My wife drives it, very nicely I might add. She does about 65% highway and 35% city. OLM still had 86% remaining on it. Only 2130Km on the engine and oil.

What do you mean GM Powertrain?

 

[bballr4567]

GM Powertrain department. They are responsible for the engines and transmissions. Might be difficult to find an actual email address for someone but this needs to get to the guys that engineered the engine.

 

[tsduke]

Sent off for a UOA when I changed my oil last week. I don't like the fuel or viscosity readings at all. It fell well out of 5w-30 viscosity.

 

[eyeballeater]

So your oil is basically in the 5W20 range like mine was. Hmmmmm looks like yours held up better seeing that you got almost double the mileage on it

 

[eyeballeater]

Amsoil also sells an oil analysis kit for $26 including postage. The lab, Oil Analyzers, is in Indiana. I think if you suspect there is an over abundance of gas in your oil, get a kit and send it in. Good piece of mind. You'll know one way or another. Can't wait to get mine back. I didn't notice anything out of the ordinary.

Hey GARYD, get your results back yet?