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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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newdude Senior Enthusiast

newdude

Posted
Posted (edited)

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 period.  I use and have used the Camaro/Corvette break-in in those owners manuals (first 1500mi vary RPM and load, no WOT until around 1500mi, try not to exceed 4k RPM) on my last 3 trucks and have burned nothing in those or lost an absolue minute amount of oil.  

 

From the owners manuals below for Silverado 1500 all engines:

Checking Engine Oil

Check the engine oil level regularly, every 650 km (400 mi), especially prior to a long trip. The engine oil dipstick handle is a loop. See Engine Compartment Overview for the location.

Warning: The engine oil dipstick handle may be hot; it could burn you. Use a towel or glove to touch the dipstick handle.

If a low oil Driver Information Center (DIC) message displays, check the oil level.

Follow these guidelines:

  • To get an accurate reading, park the vehicle on level ground. Check the engine oil level after the engine has been off for at least two hours. Checking the engine oil level on steep grades or too soon after engine shutoff can result in incorrect readings. Accuracy improves when checking a cold engine prior to starting. Remove the dipstick and check the level.
  • If unable to wait two hours, the engine must be off for at least 15 minutes if the engine is warm, or at least 30 minutes if the engine is not warm. Pull out the dipstick, wipe it with a clean paper towel or cloth, then push it back in all the way. Remove it again, keeping the tip down, and check the level.
Edited by newdude
  • Thanks 2
Acpantera Enthusiast

Acpantera

Posted
Posted
5 hours ago, newdude said:

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 period.  I use and have used the Camaro/Corvette break-in in those owners manuals (first 1500mi vary RPM and load, no WOT until around 1500mi, try not to exceed 4k RPM) on my last 3 trucks and have burned nothing in those or lost an absolue minute amount of oil.  

 

Checking Engine Oil

Check the engine oil level regularly, every 650 km (400 mi), especially prior to a long trip. The engine oil dipstick handle is a loop. See Engine Compartment Overview for the location.

Warning: The engine oil dipstick handle may be hot; it could burn you. Use a towel or glove to touch the dipstick handle.

If a low oil Driver Information Center (DIC) message displays, check the oil level.

Follow these guidelines:

  • To get an accurate reading, park the vehicle on level ground. Check the engine oil level after the engine has been off for at least two hours. Checking the engine oil level on steep grades or too soon after engine shutoff can result in incorrect readings. Accuracy improves when checking a cold engine prior to starting. Remove the dipstick and check the level.
  • If unable to wait two hours, the engine must be off for at least 15 minutes if the engine is warm, or at least 30 minutes if the engine is not warm. Pull out the dipstick, wipe it with a clean paper towel or cloth, then push it back in all the way. Remove it again, keeping the tip down, and check the level.

I get the process, and I personally am ok with my engines consumption, it's very normal and thanks for your input. Every time I have drain out the oil, it fits Into a 5qrt jug(same one I bought to fill). So six quarts in, and 5 quarts out(minus what may be in that little filter). 1 quart in 5,000 miles, no top offs either.

diyer2 Senior Enthusiast

diyer2

Posted
Posted

I wouldn't be bragging about no top offs Acpantera when you are running the motor 1 quart low for an undetermined amount of miles. Hey, it's your truck but makes no sense to me.

KARNUT Senior Enthusiast

KARNUT

Posted
Posted

Wait two hours to check your oil. That’s amusing. I live on a hill. When I change my oil I go by the manual and live between the hash marks. Even at the dealership I check before I leave to make sure oil is in it, the I leave. Periodically I check when getting gas. Depending on the gas station it’s different. Between the hash marks we’re good. I’ve had two oil users. A qt every 2500 miles. I even put a supercharger on one after 20k miles no change in usage. Both went on to normal lives with me, around 130K. 

  • Haha 1
customboss Senior Enthusiast

customboss

Posted
Posted
39 minutes ago, KARNUT said:

Wait two hours to check your oil. That’s amusing. I live on a hill. When I change my oil I go by the manual and live between the hash marks. Even at the dealership I check before I leave to make sure oil is in it, the I leave. Periodically I check when getting gas. Depending on the gas station it’s different. Between the hash marks we’re good. I’ve had two oil users. A qt every 2500 miles. I even put a supercharger on one after 20k miles no change in usage. Both went on to normal lives with me, around 130K. 

That 2 hour wait period for an accurate reading got my attention on my 2.7 too. Obviously this engine holds oil thermostatically and will " hide " it.  

 

Using 1 qt of oil doesn't mean much I agree since dipsticking oil is not a very accurate way to determine the oil usage anyway.  Most of the owners here are adding at LEAST 1 % fuels dilution to that level over their drains. Thats 1% of oil volume since Nick tests the oil for fuel loading via gas chromatography and its accurate to  gnats buttocks. 

  • Like 1
pokismoki Senior Enthusiast

pokismoki

Posted
Posted

has anyone done a compression check, and a leak down testing on all cylinders yet?

 

that's alot of power in that motor for it's size, which means a lot of energy is dispersed across 4 cylinders.. your piston rings are getting cooked to death and most likely your oil is varnishing in the rings ..i would recommend 3000 OCI and get the coolant temps down to 170-180,  i'm sure GM has an oil cooler on these model, I would install an auxillary fan on the oil cooler to knock down your oil temps to minimized sludge and varnish in the hot spots.

 

you could try running 1 quart of ATF at idle in the truck for about 30 minutes prior to oil drain

pokismoki Senior Enthusiast

pokismoki

Posted
Posted (edited)
48 minutes ago, Texcl2 said:

The 2.7 has a very advanced cooling system that I honestly wouldn’t mess with. 

what data have you acquired on the cooling system?

 

GM has to meet emmissions requirements, doing so means the engine needs to operate at very high temps, which reduces reliability

Edited by pokismoki
newdude Senior Enthusiast

newdude

Posted
Posted (edited)
2 hours ago, KARNUT said:

Wait two hours to check your oil. That’s amusing. I live on a hill. When I change my oil I go by the manual and live between the hash marks. Even at the dealership I check before I leave to make sure oil is in it, the I leave. Periodically I check when getting gas. Depending on the gas station it’s different. Between the hash marks we’re good. I’ve had two oil users. A qt every 2500 miles. I even put a supercharger on one after 20k miles no change in usage. Both went on to normal lives with me, around 130K. 

 

 

I pulled this straight from the owners manual.  It applies to all GM engines so this isn't 2.7T specific.  

 

Also, the 2 hours is their ideal time frame.  15 minutes hot or 1/2 hour warm is acceptable as well.

Edited by newdude
Acpantera Enthusiast

Acpantera

Posted
Posted
2 hours ago, diyer2 said:

I wouldn't be bragging about no top offs Acpantera when you are running the motor 1 quart low for an undetermined amount of miles. Hey, it's your truck but makes no sense to me.

I wasn't bragging,  just stating a fact. Further more there is no harm being done with just one quart low. None.

  • Like 1
diyer2 Senior Enthusiast

diyer2

Posted
Posted

Like I said, your truck. I wouldn't do it.

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