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10k vs 5k mile oil change

Discussion in 'General Tundra Discussion' started by sabet, Aug 3, 2022.

  1. Sep 23, 2022 at 6:40 AM
    #241
    Clay J

    Clay J Yota Fan

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    Wow that is crazy. Wasn’t it Pennzoil that was known for having issues with paraffin wax back in the day?
     
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  2. Sep 23, 2022 at 6:41 AM
    #242
    Sumo91

    Sumo91 Oil snob

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    No problem brother. What's really great is the customer service, the owner, Dave, will let you call him and answer any of your questions (what other oil company can you call and talk to the owner?). He even made me a special batch of 75w for the transfer case, no extra charge from their regular gear oil prices.

    If you ever want a tour of their blending facility, they're happy to oblige. You can literally eat off of the floor in there
     
  3. Sep 23, 2022 at 6:42 AM
    #243
    Sumo91

    Sumo91 Oil snob

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    Hmm I'm not entirely sure on that one.
     
  4. Sep 23, 2022 at 6:55 AM
    #244
    Asimov2025

    Asimov2025 Not Sure

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    I would think if you tow in S4 you should probably change the oil at 2.5k due to the forced higher revs under load...but the transmission fluid stays cooler so they have that going for them.
     
  5. Sep 23, 2022 at 7:06 AM
    #245
    texasrho83

    texasrho83 Teacher in a Tundra

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    Sumo's Oil Reserve?
     
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  6. Sep 23, 2022 at 7:07 AM
    #246
    Sumo91

    Sumo91 Oil snob

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    Looks like I have a name for it now :thumbsup:

    Here is most of it.
    20220923_101000.jpg
     
  7. Sep 23, 2022 at 7:25 AM
    #247
    Bammer

    Bammer I'm disinclined to acquiesce your request.

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    That is customer service ! Where are they? Never mind, I'm heading to their website now. Thanks for the info @Sumo91
     
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  8. Sep 23, 2022 at 7:35 AM
    #248
    texasrho83

    texasrho83 Teacher in a Tundra

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    Sumo hooked me up with HPL's info too and I reached out to them. The lady responding to my emails didn't know if they could make custom batches but I told her uh yeah you just made some for Sumo lol anyway love their service.
     
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  9. Sep 23, 2022 at 8:10 AM
    #249
    Terndrerrr

    Terndrerrr it's good to get lost once in a while

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    The Car Care Nut says your 5.7 leaks a small amount of gas into your oil over time. If you’re going longer than 6mo, it’s happening regardless of which oil and filter you use. He says 5k/6mo OCI is what keeps Toyotas happy the longest. Anyone care to confirm or deny this?

    That’s basically why I switched to Kirkland and 5k OCI. Plus, I’m actually saving money. Engine isn’t louder, either. Running Mobil1 0w20 however sounded like I had a bad lifter. :eek2:
     
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  10. Sep 23, 2022 at 8:12 AM
    #250
    Sumo91

    Sumo91 Oil snob

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    A UOA should show any fuel dilution. I'll post some 10k UOAs later today. Gotta run some errands.
     
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  11. Sep 23, 2022 at 8:18 AM
    #251
    nobodyintexas

    nobodyintexas What?

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    Whatever this forum told me to do
    RE: fuel dilution

    this was the test right after all the dyno tuning.

    upload_2022-9-23_10-16-25.jpg
     
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  12. Sep 23, 2022 at 8:27 AM
    #252
    Terndrerrr

    Terndrerrr it's good to get lost once in a while

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    Nice. Wonder if that’s something that increases over time and as you enter higher miles.
     
  13. Sep 23, 2022 at 8:30 AM
    #253
    nobodyintexas

    nobodyintexas What?

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    Whatever this forum told me to do
    I would guess both.

    a higher mileage engine probably has worn rings and thus more blow by.
     
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  14. Sep 23, 2022 at 9:19 AM
    #254
    Randy Morton

    Randy Morton Life takes its toll, please have exact change.

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    I'm not sure about Pennzoil, but Amalie and Valvoline were both known for sludging up engines.
     
  15. Sep 23, 2022 at 9:26 AM
    #255
    texasrho83

    texasrho83 Teacher in a Tundra

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    We didn't even use Pennzoil in our lawn mowers
     
  16. Sep 23, 2022 at 9:31 AM
    #256
    Mr.bee

    Mr.bee Nude member

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    I grew up with 3k changes. The last 500 miles on a 5k change really starts to bug me, but changing every 5k, i dont have to write down the last change, who else had a list of milage written on the back of their regestration sticker?
     
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  17. Sep 23, 2022 at 9:38 AM
    #257
    texasrho83

    texasrho83 Teacher in a Tundra

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    I record all maintenance in a little journal I keep in my console
     
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  18. Sep 23, 2022 at 9:47 AM
    #258
    Mr.bee

    Mr.bee Nude member

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    I used to, but now, i've got a PC file with pics and reciepts.

    my last oil change i got nervous at 4k, decided to run some MMO through it, and got dirtier oil when i changed, because my first change was super clean after 3-4 k to get me on a schedule of 5's.
     
  19. Sep 23, 2022 at 9:49 AM
    #259
    texasrho83

    texasrho83 Teacher in a Tundra

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    I remember pouring in engine flush anytime I switched oil brands or went past 3k miles
     
  20. Sep 23, 2022 at 11:10 AM
    #260
    07DCLimited

    07DCLimited New Member

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    The Frozen North....
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    Optima 830 CCA Yellowtop 27F battery, full Amsoil throughout.
    True...that and the fact that diesels have a huge oil capacity. May as well have Amsoil delivered via tanker in that instance...;)

    Wow...good to know. I guess trying to avoid varnish buildup in my engine and on my oil seals is a futile endeavor after all and accept that changing oil seals every 5 years is normal. I'll just not bother anymore and instead embrace varnish as my inevitable friend. I'll change my oil not because of how it looks, but only if the sole yardstick of oil life (the odometer) rolls over 20k miles, and only then if an oil change analysis says that I need to...:rolleyes:
     
  21. Sep 23, 2022 at 12:32 PM
    #261
    Sumo91

    Sumo91 Oil snob

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    I've never once in my life heard of oil seals going bad after 5 years from the color of oil. The UOA will tell you everything you need to know about the condition of your oil, if changing out good oil that's slightly discolored floats your boat, then go for it.

    You change your oil based on color, well, I hate to break it to you. But every time you change your oil, then drive it any amount of time, it's contaminated, so you might wanna change it every time you drive it, based on how you change your oil now.

    I'll stick to the facts and the science behind oil, and the great team of oil engineers and chemists I know. :thumbsup:
     
  22. Sep 23, 2022 at 12:44 PM
    #262
    Sumo91

    Sumo91 Oil snob

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    Here you go, as promised.

    Screenshot_20210809-090229_Acrobat for Samsung.jpg
     
  23. Sep 23, 2022 at 4:26 PM
    #263
    07DCLimited

    07DCLimited New Member

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    The Frozen North....
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    Many folks have had valve cover oil leaks, spark plug tube leaks, cam tower leaks, etc on vehicles much much newer with far fewer miles than mine. Fresh oil helps to prevent the hardening of rubber seals and while the effect on FIPG is less clear, fresh oil definitely can't hurt. 15 years, 265k miles in a climate that the temperature swings 140deg F from winter to summer and not one iota of a leak or even hint of one. Given the massive cost (and not insignificant risk) to change something like a rear main seal or a valve cover gasket, I'll stick to what's worked for me. I want zero engine issues, no plugged oil squirters, stuck oil control rings or VVT issues. I plan to keep my truck until either it dies an untimely death or I myself expire and my strategy seems to be the best way for me to ensure as few problems as possible occur.
     
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  24. Sep 23, 2022 at 11:12 PM
    #264
    07DCLimited

    07DCLimited New Member

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    This is a really good video describing and demonstrating the embrittlement and degradation of seals due to insufficient oil changes. It is an extreme scenario, but demonstrates well how seals are very negatively affected by contaminants in one's engine oil.

    https://www.youtube.com/watch?v=4wPlxcB7jHw

    For me, changing my oil at the first sign of contaminant accumulation (when the oil turns a modest shade of brown when cold) ensures the absolute maximum life out of my seals by minimizing their exposure to said contaminants. And I'm very diligent in incorporating idling time into my mileage calculation, especially in winter when warmup idling time is much longer than in summer. Traffic light idling time is also not be ignored either, and I liberally estimate such when I'm driving often in city traffic. So while I technically change my oil early as far as the odometer reading is concerned, in reality once idling time is considered, it's often not too early at all.;)
     
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  25. Sep 24, 2022 at 4:56 AM
    #265
    Sumo91

    Sumo91 Oil snob

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    From someone that does industrial forensics on seals and gaskets.


    Seals typically fail from


    Abrasion ( particulate matter grinding, shaft abrasions etc.)

    Fit (can be anything from dimension too small for proper seal tension, egg wear of shaft, misalignment creating a gap)

    Installation (cocking a seal, damaging the garter spring/element)

    Heat ( over time this will fatigue any polymer)

    Dry Running ( a seal needs a bit of lube to live- its not a quality of the oil but the long term absence leading to abrasion and/or thermal fatigue)

    Pressure ( usually seen as an extrusion but can be just blow by)

    Normal end of life ( no polymer compound lasts forever with all properties intact)

    I left off things like mechanical damage because those failure modes are usually random and external to the seal proper.

    Basically the same for gaskets but gaskets are prone to set and need retorquing evenly, sometimes they saturate/delaminate ( even rot)

    Sometimes a change to a much different fluid that's thinner or a temp change will leak at certain grades but not at others.

    So, to say a gasket or seal failed due to an oil, extended oil change interval or some "normal to that application" contamination- while POSSIBLE would be at the highest end of improbable and require significant supporting hard evidence to prove it.

     
    Last edited: Sep 24, 2022 at 5:03 AM
  26. Sep 24, 2022 at 6:20 AM
    #266
    omgboost

    omgboost The Accountant

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    I have 3 oil analysis in my post. 2 analysis at 8k OCI and 1 at 10k OCI.

    https://www.tundras.com/threads/here-is-my-engine-oil-analysis.55486/
     
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  27. Sep 24, 2022 at 6:25 AM
    #267
    Tyman

    Tyman Chickity China, the Chinese chicken.

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    I trust the oil analysis reports, and the experience of seasoned mechanics to help me determine oil change intervals. I’m at 5,000 oci on my Tundra. On my Ford Transit 3.5 TT I’m at 2,500 oci.
     
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  28. Sep 24, 2022 at 6:32 AM
    #268
    nobodyintexas

    nobodyintexas What?

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    Whatever this forum told me to do
    these oil analysis reports are like kryptonite to internet gurus.

    proves the know it all's wrong every time.

    the only time i see a real difference in oil reports is when they are taken past 7500 miles.

    under 7500 miles, all oils behave in a similar range.

    the <7500 range varies so little it is safe to say - you should not pay more than Kirkland rates for oil.


    and lather on - I rotate tires every 5k....so 2 birds get knocked out.
     
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  29. Sep 24, 2022 at 6:43 AM
    #269
    texasrho83

    texasrho83 Teacher in a Tundra

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    With the more aggressive MT tires I've done rotations at 3k
     
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  30. Sep 24, 2022 at 6:44 AM
    #270
    nobodyintexas

    nobodyintexas What?

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    Whatever this forum told me to do
    You might need to try 0w-MT tires.
     

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