Oil consumption

[Donstar]

11 hours ago, Kenster said:

Did they get you a new short block or rebuild your engine.  

They repaired the existing engine.  I believe you will find several members on this forum had oil consumption issues with their '07 - '13 Silverado/Sierras.   My argument is that it is not normal anymore to have to top off your oil between regular oil changes.  Decades ago you would find bulk engine oil next to just about every gas pump.  It wasn't unusual to ask the attendant to,  "fill 'er up and check the oil".  You'd feel terrific if they said, you're good for now.  Until my '09, I could not remember topping off the oil in my daily driver for the previous 20+ years.  After this repair in 2011,  I have not needed to add oil to any vehicle.   The experience for me was prolonged, frustrating and time consuming.  I kept good records of mileage and amount of oil.   I had a local quick lube shop top off my oil and their receipt would state the mileage and measured amount of oil.  It is impossible to find any objective mechanic who will tell you that adding two quarts of oil between oil changes is normal for a modern stock engine.  Your Service Advisor is doing his/her job so be polite but persistent.  

[diyer2]

I buy used vehicles with low miles.

I guess I'm not very lucky.

Every vehicle I have owned used oil betwen oil changes.

OCI of 3 k miles.

Some more some less.

The worst was 3/4 quart in 3 K miles. This was with 250 K miles on the motor.

But never 2 quarts in 5 K miles.

 

Edited October 28, 2019 by diyer2

[davester]

My '04 6.0L uses about 1 quart in 5K (7500 km), it's up to 290k km on the odometer...

[Kenster]

20 hours ago, Donstar said:

It's not normal.  My '09 went through a lot of oil during the first 50K miles.  GM finally fixed it after I jumped through a lot of hoops.  I kept the same truck for another 100K without any further issues.  My current truck ('15 Sierra) is like Grumpy Bear's!   Be persistent.  Tip:  If your dealer changes your oil, check that they don't fill above the full line.  This will mess up your consumption test.   

Thank you, I will continue to work this issue monitoring the oil consumption.   Modern day engines - haaa!

[Jsdirt]

Everything is friggin junk today. My brother's $600 Honda push mower's RWD transmission seized up solid and nearly smoked the belt in half before he could disengage it. Low bidder parts from every manufacturer. If you own anything built before 1996, you'd better hang onto it.

 

If any GM dealer rebuilt my engine, I'd be looking to dump that thing ASAP. Their idea of "rebuilt" is completely different from mine. Should be called "band-aided", not "rebuilt". I've got a buddy that had a 6-cylinder newer Camaro that ate the engine with less than 30k on the clock. The dealer "rebuilt"  it (dropped the pan and slapped rings & bearings in it), and it grenaded completely not even 3k miles later. He got a new engine after that, dumped it, and bought a Mustang.

[tbarn]

Did they start an oil consumption test? 1qt is not "normal" but considered "acceptable" by GM. Not much you can do if it uses less than a quart in 1k except maybe find another dealer willing to work with you. Bend the rules a bit.

[Oyeah]

2016 3.6 Z71 46000, miles 12ozs every 1800 miles. When I did oil change it was 2 quarts low . This seems excessive

Edited January 31, 2024 by Oyeah

[newdude]

24 minutes ago, Oyeah said:

2016 3.6 Z71 46000, miles 12ozs every 1800 miles. When I did oil change it was 2 quarts low . This seems excessive

 

 

Considered normal.

 

GM limit is 1 quart in 2000mi.  So you are losing maybe 1/2 a quart at the most in 2000mi, therefore would be considered within normal consumption limits.

[Grumpy Bear]

3 hours ago, Oyeah said:

2016 3.6 Z71 46000, miles 12ozs every 1800 miles. When I did oil change it was 2 quarts low . This seems excessive

 

3 hours ago, newdude said:

 

 

Considered normal.

 

GM limit is 1 quart in 2000mi.  So you are losing maybe 1/2 a quart at the most in 2000mi, therefore would be considered within normal consumption limits.

 

Key words here are GM's LIMIT. 

 

Can't agree that "normal' would be the right word. In GM's eyes, acceptable perhaps but normal. Not since the Model A would any builder with an ounce of self-respect call it normal. Not sure even then. 

 

What GM means by normal is "We won't do a thing to help you with OUR issues until it exceeds a quart in 2K". 

 

Give some thought to what that means. Means that if the bar were not that low the warranty work would drive them bankrupt. Without honor. 

 

I said what I said.