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Oil consumption 2019 Silverado 2.7

Dave-Minnesota
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Diamond817
Diamond817

GM's "acceptable" oil consumption guidelines is so high that it guarantees GM will never have to fix any engine. 

newdude
newdude

Yea unfortunately for GM and oil consumption it must be documented by the dealer for warranty.     The closer dealer was rude in telling you that they couldn't be of help IMO.   Go

newdude
newdude

Something to keep in mind when checking oil levels to monitor consumption is how GM says to do so, and this applies to all their engines.  I've got 6800mi on my 22 HO, have lost zero oil in this time

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fondupot Senior Enthusiast

fondupot

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17 hours ago, TheRiver said:

 

Are you still running without the fuses installed???  How is oil consumption???

 

I still have the fuses pulled. Oil consumption is still about 1 to 1.5 quarts over the course of my oil changes. My last oil change was done on Friday 12/15. I ran it to 10% on the OLM, It was about 6,400 miles. I don't typically run the oil changes this long, but I a lot driving to get done. I usually have been changing it around 25-20%.

 

This oil change I added around 1.3 quarts over the duration of the 6,400 miles. One time I checked the oil and it was barley on the dipstick.....definitely gotta be fastidious about checking the oil level.

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TheRiver Enthusiast

TheRiver

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On 12/18/2023 at 9:58 AM, fondupot said:

 

I still have the fuses pulled. Oil consumption is still about 1 to 1.5 quarts over the course of my oil changes. My last oil change was done on Friday 12/15. I ran it to 10% on the OLM, It was about 6,400 miles. I don't typically run the oil changes this long, but I a lot driving to get done. I usually have been changing it around 25-20%.

 

This oil change I added around 1.3 quarts over the duration of the 6,400 miles. One time I checked the oil and it was barley on the dipstick.....definitely gotta be fastidious about checking the oil level.

 

With what type of driving do you seem to be losing the oil........................high speed interstate, or stop and go around town/suburbia???

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fondupot Senior Enthusiast

fondupot

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55 minutes ago, TheRiver said:

 

With what type of driving do you seem to be losing the oil........................high speed interstate, or stop and go around town/suburbia???

 

About 90% highway driving. Between 70-80mph. I cover several states for my job and requires quite a bit of driving.

 

45 minutes ago, newdude said:

Not to sound totally crazy, but make sure you guys/gals don't have any leaks.  Oil coolers and lower pans are rather common on these 2.7 Turbos.  

 

I've went over the motor as best as I can tell. No leaks that are apparent and obvious. Truck parks in my concrete driveway over the weekends, and there's no drips or anything under the truck. The amount of oil that's getting used would for sure signs if it was leaking from a gasket or the like. The mechanic I bring this truck to says he only has a couple other 2.7's that they service on the regular and he says they do the same thing, burn oil.

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TheRiver Enthusiast

TheRiver

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3 hours ago, fondupot said:

 The mechanic I bring this truck to says he only has a couple other 2.7's that they service on the regular and he says they do the same thing, burn oil.

 

Is the turbo oil cooled or water cooled??  If oil;  I'll bet that's where she's going, especially if the tailpipe is black inside.  The video you posted of the spark plug change out showed that you're really not getting oil into the cylinders.  What did that take;  about 12" of socket extensions in order to reach the plug???🤣

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newdude Senior Enthusiast

newdude

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3 hours ago, fondupot said:

 

About 90% highway driving. Between 70-80mph. I cover several states for my job and requires quite a bit of driving.

 

 

I've went over the motor as best as I can tell. No leaks that are apparent and obvious. Truck parks in my concrete driveway over the weekends, and there's no drips or anything under the truck. The amount of oil that's getting used would for sure signs if it was leaking from a gasket or the like. The mechanic I bring this truck to says he only has a couple other 2.7's that they service on the regular and he says they do the same thing, burn oil.

 

 

Interesting.  I'm at 18,500mi and so far I've only lost from leaks.  

 

 

12 minutes ago, TheRiver said:

 

Is the turbo oil cooled or water cooled??  If oil;  I'll bet that's where she's going, especially if the tailpipe is black inside.  The video you posted of the spark plug change out showed that you're really not getting oil into the cylinders.  What did that take;  about 12" of socket extensions in order to reach the plug???🤣

 

 

Oil lubed and water cooled.  

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fondupot Senior Enthusiast

fondupot

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22 hours ago, TheRiver said:

 

Is the turbo oil cooled or water cooled??  If oil;  I'll bet that's where she's going, especially if the tailpipe is black inside.  The video you posted of the spark plug change out showed that you're really not getting oil into the cylinders.  What did that take;  about 12" of socket extensions in order to reach the plug???🤣

 

Yea the socket I bought had a 6" extension on it and I think i had to use another 4" or a 6" extension to get all the way down.

 

I believe the turbo is oil lubricated, and water (coolant) cooled. Not sure else where the oil could be going.

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silveradosid Senior Enthusiast

silveradosid

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Posted

this is where it is going. i took my air intake off to get at the engine harness. the rubber boot that attaches the air intake to the turbo and the inside of the turbo are soaked in oil .there is a hard plastic line that comes from the back of the engine to the turbo. i don't know if this part off the pcv system but the turbo is sucking oil through that line. what sucks is i complained about the oil leaking out of the turbo outlet and was told it was normal to have some oil there. now i don't have warranty any more , and this is not normal

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silveradosid Senior Enthusiast

silveradosid

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Posted (edited)

and this is what the throttle body looks like,it is also coated in oil. i guess i am going to have to develop a catch to try and stop the oil getting in to the engine for now until i can figure out how to solve this problem. there is not much info on how this pvc system works. the funny thing is i let the dealership do the last 2 oil changes and it didn't use any oil. i did  the last oil change at 40% on olm and right now it is at 60% and no oil on the dipstick. this problem has been brewing for awhile as i have had oil leaking out of the turbo outlet pipe which the dealer said was normal. now what ever is causing this is got much worse, might be because of colder weather but this is still not normal and of course i am out of warranty now

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Edited by silveradosid
more info
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Texcl2 Enthusiast

Texcl2

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Posted (edited)

My experience has been a lot more oil used in a dealer fill, not sure why, I use Mobil 1 ep usually. Also it doesn’t use oil at lower speeds only with a lot of 75mph + speeds. I suspect it is emissions related and inhaled through the egr/pcv valve. My consumption is very minor though. I still check the oil all the time. I also know the engine retains a lot of oil so you have to let it sit over night if you want to get most of it out. I change my oil every 3500-4000 miles so I ll never run low regardless. Most modern engines use a little oil now a days. 

Edited by Texcl2
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customboss Senior Enthusiast

customboss

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On 12/22/2023 at 5:45 AM, silveradosid said:

and this is what the throttle body looks like,it is also coated in oil. i guess i am going to have to develop a catch to try and stop the oil getting in to the engine for now until i can figure out how to solve this problem. there is not much info on how this pvc system works. the funny thing is i let the dealership do the last 2 oil changes and it didn't use any oil. i did  the last oil change at 40% on olm and right now it is at 60% and no oil on the dipstick. this problem has been brewing for awhile as i have had oil leaking out of the turbo outlet pipe which the dealer said was normal. now what ever is causing this is got much worse, might be because of colder weather but this is still not normal and of course i am out of warranty now

20231221_161419.jpg

Did you write that the oil smells like fuel?  If so change it more often or go to a different oil to get a better ring and valve guide seal. 

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