Jump to content

8.1l oil loss

walkerkd

Recommended Posts

walkerkd Enthusiast

walkerkd

Posted
Posted

i have a problem has anyone check their oil between oil changes?(3500) well anyway i talked to the dealership and they told me that its normal. for the first change anyway im at almost 6k miles i filled up my truck and the damn oil wasnt even on the stick!! i was worried OMG whats going on??? last week when i turned 5k i had the spiin on filter on the alli changed and the oil checked everything fine went 700 miles this weeken returned to ft worth and check the oil at fill up no reading!!! some one help me..!!! truck runs awsome getting 12 mpg city!! just worried. maybe i should have gotten a dmax :D

Shaners Senior Enthusiast

Shaners

Posted
Posted

It seems with these trucks the best time to check the oil is if they have been shut off for at least 1/2 hour or more.  Since they have an anti-drainback filter (on most models) the oil stays in the gallies for awhile.

 

I check my 6.0L with the motor cold.  I was at the second hole from the top of the stick when my change oil light came on.  So I used only a few ounces in between changes.

 

BigBlocks tend to use a little more oil, and a quart in between changes shouldn't surprise you, especially if you are working the truck hard.

 

I don't know if the 8100 has the anti-drain back filters, but I bet it does...

CMNTMXR81 Senior Enthusiast

CMNTMXR81

Posted
Posted

FYI, you're not going to like this answer but Big Block V8's since their inception way back yonder EAT OIL!!!  Period!  No if's ands or buts aboot it.  Ford and Chrysler Big Blocks were even worse than their GM counterparts.

 

With that said, my truck now has 4,200 miles on it.  I've already changed the oil three times.  Between the 2nd and third time when I actually physically checked it, I too was about 1.5 quarts low.  One must also factor in that up until about 6k, these new engines are still technically "breaking in" or more correctly "loosening up."  As such, expect oil usage to be a little higher than normal.  Somewhere between 6 and 10k miles you should see this break in usage taper off and then it's just regular big block oil swilling problems.

 

While yours does seem extensive, it is perfectly normal (as much as I hate to say it and you hate to hear it) for an engine of this size and of this large reciprocating mass.  I would make it a point to your service department that this thing is EMPTY and not just low and there could be something more critical at hand.  I just want you to realize that these things DO eat oil.

jd hauler Enthusiast

jd hauler

Posted
Posted

I've always heard from the old timers that a healthy motor will use some oil, not to leave clouds and puddles on the driveway, but I  know of the motors I've had, my 350 in my old 85 chevy used 1-2 quarts in 2000 miles. It never smoked and it was hopped up for pulling my trailers. If it doesn't smoke or rap, oil is cheap, and like the guy said in the previous post, big blocks like oil and a lot of it.

walkerkd Enthusiast

walkerkd

Posted
  • Author
Posted

thanks guys its my first gm i have always bought ford or dodge diesels and i made the switch because this is a awsome truck. i just dont want to break it i haul alot of live stock im either pulling my 40 or 45 foot stock trailer alot and just worried about that. im going to put the larger oil filter and i guess go to using rotela or doesn anyone have a suggestion on a good conventional oil .. thanks for all your help.. :D

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.4k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,837
    Total Members
    8,960
    Most Online
    bellssn690
    Newest Member
    bellssn690
    Joined

  • Who's Online   4 Members, 2 Anonymous, 831 Guests (See full list)

  • Latest Articles

  • Posts

    • Chuck FB
      Gas Prices

      By Chuck FB · Posted

      Interesting, I suspect I would have fueled up in Lee Vining as the day prior I would have filled up either in Laughlin or near there and maybe again before I entered Death Valley and once out the other side late that evening as I kept on driving into the night up near Lee Vining. Next morning I most likely fueled up in LV before heading over Tioga Pass into ( as I refer to it as "Yose .... Mite" 😁 ). And again that was 19 years ago but the price then must not have jumped out at me like the 5 bill a gallon theme of nutty cult hippy country Big Sir or head so far up their rear Aspen. I'd be curious to know where the highest prices are in the lower 48, I probably would not be far off to guess somewhere in Cali forn ie. Coldfoot and Prudhoe bay may have those prices beat but that is a whole other world up there and when prices are more normal elsewhere that is about what they can be up there I believe in no mans land. Anyway interesting that the 395 corridor is hosing people and the thing is, its tourist season and its not like there are a lot of competition options when driving up that highway from what I could see. Yup, big ole Boaterhomes and various other RV's ahead and behind me at the Yosemite entrance gate and they have to get their fuel somewhere.  
    • Atlas
      Gas Prices

      By Atlas · Posted

      Those can be high, as well as the big California cities. The ones that will pop your eyes out are the 395 corridor on the Eastern side of the Sierra Nevadas. Lee Vining, $7.19 for regular and $8.89 for diesel is what the Google said right now.
    • newdude
      2020 Trailboss 6.2 replacement

      By newdude · Posted

      Correct.  2019-2021 model years are serviced by a different p/n.  19420611.  Recall 2021s use 19420611.   The recall engines 2022-2024 model years are serviced with 12740076.     The difference between 19420611 and 12740076 is GM changed injector size for 2022.  The injectors are smaller on 12740076 with smaller injector bores in the cylinder heads to match the smaller injectors.  So you can't install a 19420611 in a 2022-2024, and you can't install a 12740076 in a 2019-2021.     Both engines are the replacement engine p/ns that are in the L87 recall.  So both of these are the updated engines.     Here's a version of the L87 recall with the p/ns for all the parts needed.    RCRIT-25V274-7075.pdf   Note it shows 19420611 and 12740076 with an asterisk to a footnote "Use the VIN and the GM Electronic Parts Catalog (EPC) to determine which part to order if two or more part numbers are listed for the same part, as it may vary by vehicle options."    
    • 2017Z
      2020 Trailboss 6.2 replacement

      By 2017Z · Posted

      Looking for advice from this group. Took my flawless 2020 6.2 TB to an unnamed shop for routine rear brakes and oil change. Tech forgot to put oil back in after the full service and needles to say, destroyed my engine.  It’s all on their shop video so they are responsible.   I had my Chevy dealer do the analysis and they confirmed its compromised and said engine replacement. The manager said they only get GM reman engines from GM with full 3 yr warranty and the one they would put in is not same as what’s they are swapping out on 21-25 for recall.    I am looking for advice why that would be a different engine because obviously I had the good 6.2 year and replacing it has my concerns with that recall for 21-15   Also what’s the pros and cons of accepting the engine swap vs telling the shop that bricked the truck to pay up so I buy a new truck. I’m concerned about stigma resale eventually if I just decide to get rid of it after the swap or other issues showing up after the swap out.  
    • GN2018
      AFM Disabler Question

      By GN2018 · Posted

      Just looked up my records.  I've never gone over 5000 miles between oil changes.  At 46K miles, I have 10 oil changes.  I hope that will help.  I also installed the disabler last year.  I've still had a few times when it didn't seem to engage (which I can tell because the start stop feature kicks in), but for the most part, I think it's working.  For some reason, GM did not include the number of cylinders running in the information screen like I had on other models.  In my Cadillac, it shows me when it's running on 4 cylinders on the fuel milage screen.  I can't find that on my '21 Denali.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...