Jump to content

Oil Consumption

waltman

By waltman
in 6.6L Gas V8 (L8T)

 Share

Recommended Posts

Jettech1 Senior Enthusiast

Jettech1

Posted
Posted
59 minutes ago, Grumpy Bear said:

Sliding vane pumps make noise. :(

I know I know.  The only piece of the puzzle I'm missing is why it didn't make a peep before my first oil change?  That's what bothers me.  I'm trying so hard to figure that out and I keep coming up with nothing.

  • Like 1
  • Replies 42
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

64BAwagon
64BAwagon

I just got back from an extended trip. 4000 total miles with almost 3000 of that including 13,000 lbs of trailer and gear. The disptick still shows full and the oil is visually (not that it means much

KARNUT
KARNUT

Over the years I resist checking oil on trips or different locations. Like gas stations. If I do unless it’s over a qt low ( which is never) I call it good. The last time I forgot my own advice I drov

Another JR
Another JR

I suspect all these trucks have similar oil pump noise on start up. Some people are aware of it, and others aren’t. If you start it in a garage or other enclosure you definitely hear it more. I doubt

diyer2 Senior Enthusiast

diyer2

Posted
Posted

How much does this noise bother you?

Switching to a 100% synthetic oil like Amsoil or Redline would make it quieter IMO. 

  • Like 1
Another JR Senior Enthusiast

Another JR

Posted
Posted
14 hours ago, Jettech1 said:

I know I know.  The only piece of the puzzle I'm missing is why it didn't make a peep before my first oil change?  That's what bothers me.  I'm trying so hard to figure that out and I keep coming up with nothing.

It may be that a pressure-filling system of some kind they use at the factory clears a bubble that aggravates the drainback characteristic once you do a drain and gravity fill.  There’s not much we can do as diy maintainers other than pre-filling the filter when you replace it. Slight differences in viscosity aren’t likely to eliminate the issue. I don’t think this needs to be your primary selection criterion for the oil you use. 

  • Like 1
Pryme Senior Enthusiast

Pryme

Posted
Posted
10 hours ago, Another JR said:

It may be that a pressure-filling system of some kind they use at the factory clears a bubble that aggravates the drainback characteristic once you do a drain and gravity fill.  There’s not much we can do as diy maintainers other than pre-filling the filter when you replace it. Slight differences in viscosity aren’t likely to eliminate the issue. I don’t think this needs to be your primary selection criterion for the oil you use. 

It’s very easy to pre fill the filter on this truck. I filled mine about half way before screwing it’s back in. Can’t hurt. 
 

the manual for our kohler powered mower specifically says to pre fill the oil filter. 

  • Like 1
  • 5 months later...
  • 2 weeks later...
the8rotor Enthusiast

the8rotor

Posted
Posted

4200 HARD miles on my 2024 and zero consumption. I check every week or so and nada.

 

Also had over 32k on my 2021 6.6 and zero consumption. Harsh towing for those miles as well.

John Rommelt Enthusiast

John Rommelt

Posted
Posted
21 hours ago, the8rotor said:

4200 HARD miles on my 2024 and zero consumption. I check every week or so and nada.

 

Also had over 32k on my 2021 6.6 and zero consumption. Harsh towing for those miles as well.

Excellent, Thank you

John Rommelt Enthusiast

John Rommelt

Posted
Posted (edited)
30 minutes ago, Jettech1 said:

I read that article not too long ago.  I think it's very cool although there is no way in hell I would pay the premium for one.  But it is very cool!!

CORRECT! (Super Charger) Ouch $

Trifecta has been working on Cracking ECU and HP Tuners I think is working with Trifecta Performance.

I Can see Tuning Doable, and Exhaust.

Edited by John Rommelt
  • Like 1
Dustin Marshall Enthusiast

Dustin Marshall

Posted
Posted

Back on topic.

 

2024 GMC 2500HD AT4 w/ 6.6L L8T.  Only 4300 miles, so still early...so far I'm happy to report no oil consumption.  Really enjoying the L8T w/ 10 speed 'Allison'.  Nice smooth and refined drivetrain.  Definitely quieter, smoother with more refined shifts vs the Ford 7.3L w/ 10R140 (I've owned both).

  • Like 2
waltman Enthusiast

waltman

Posted
  • Author
Posted

I have since traded the truck in I originally started this thread about but I'm convinced it was probably something like the PCV system acting up because it was only going through oil for about a month and then it stopped and never came back.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • twgraham
      Video processing module location

      By twgraham · Posted

      Can someone tell me where the video processing module is in a 2023 Silverado? I'm getting conflicting results that it's in the front passenger area or the rear passenger area behind the seat.
    • Chuck FB
      Missing thrust bearing? And oil selection

      By Chuck FB · Posted

      Yes I agree, its what amounts to free advertising to let people know about his UOA testing company, and not that there is anything wrong with that but certainly that is a motivator for putting out videos about the science of oil as well as other topics such as oil and air filtration etc. The interesting part I found with his last video is not only the physics behind the reason for the varying wear due to a diesels working torque range causing more bearing load and that higher viscosity oil is of benefit, it was also that the chemistry behind the GM Dexos 0W-20 and the Mobil Dexos licensed 0W-20 are far enough apart that its showing up with a difference in wear even though the two oils are matched in viscosity and in that comparison viscosity was not having the finger pointed at it.    There are a few youtubers out there or one anyway that I have watched a bit of who has gone through the pains of accessing various countries manuals for a certain engine platform and while in the US/Canada it may say use 0W-20 or what have you for some Toyota product, in some other countries it sings a very different tune for the very same engine with the typical traditional oil viscosity/ambient temperature charts to help choose which oil viscosity is correct for the conditions the vehicle will be used in and in some cases its taken an engine in a US manual that states only use 0W-20 as per warranty coverage and yet that same engine in certain other countries may have up to a 15W-40 etc oil option that meets the spec. Another words the guy who is driving through Death Valley or Phoenix and south weather at 120f is often being fed a line of bs by the US system that has forced vehicle companies to restrict the warranty to a specific low viscosity oil for anterior reasons as well as the long drain interval suggestions.    Thankfully youtube is free ( yet anyway ) for viewers to sift through information and of course comes with the good and the bad ( truth and lies ) and we can choose to turn off/not watch what a person finds is bs or just not interested in the topic.         
    • Atlas
      Missing thrust bearing? And oil selection

      By Atlas · Posted

      No doubt... But, as someone who doesn't pay for his services, but who has provided a few views/clicks on his Youtube platform, the data around the Mobil oil testing I think does have some value including to "freeloaders" like me.   A lot of what he's doing is likely showing the OE's work in their oil selection, something that many of us had kind of assumed was true all along, a good balance of both excellent protection and efficiency.
    • Z45
      Missing thrust bearing? And oil selection

      By Z45 · Posted

      Lake Speed is drumming up business for his company just by being in the spot-light so he has a vested interest in stoking the 0W-20 fire.  IMO  
    • Chuck FB
      summer road trips in the 2026 2500HD

      By Chuck FB · Posted

      I knew when I bought my truck that it had off road hill decent or craw control or whatever they call it and rolled my eyes at that but it gets throw on with other options my truck has, I just never had a heads up if the highway speed regular cruise setting had anything to do with the brakes and that took me by surprise. If you've ever been to the top of Pikes Peak and watched those ahead of you on the way down with their brake lights on constantly, one can guess they are probably not gearing down or not enough anyway if their vehicle will allow and a good reason their is a brake check spot part way down where they use an infra red heat gun to check how hot ones brakes are front and rear.    Your right that once one gets out of the front range by Denver and I've not been on that stretch of 285 between Denver and Fairplay myself but I know its high and Fairplay at 10000 feet, Buena Vista at 8000, it drops a bit from there but then your going back up and over the 11000 pass and Durango is at 6500 . So yes your definitely right that 6500 and a lot higher is the theme of going anywhere out in that direction from Denver but hey, the down hill sections give fantastic fuel mileage !.    I don't even look at the fuel pumps for what premium costs here, since I live on a farm and up to this point get fuel delivered I am rarely in front of a fuel pump and when I am, I am often using card lock bulk fuel stations so it tells me what the price is AFTER I buy the fuel. Looking up on gas buddy and converting to US gallons but in Canadian dollars, regular on average of the prices listed was around 5.95 and premium is around 7.00 . That was one reason I did not go for the 6.2 half ton aside from its lack of carrying/towing if one was going by the rule of using premium fuel and until recently one could only buy regular farm gas if playing the few cents off game for farm dyed fuel for a "farm licensed pickup". But yes I hear you on the fuel price difference and like the diesel theme with it often being more expensive then gas it doesn't have quite the charm to it either as it once did although right now here for some reason the price of diesel has come down more so its now inline with the price of regular gas. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...