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What oil is best? and what ratio?

Discussion in 'Chainsaws' started by DexterDay, Dec 28, 2015.

  1. czar800

    czar800 Here For The Long Haul!

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    We use all Rotella on our farm. Got four main tractors plus the combine and only one tractor uses a little bit of oil in between oil changes.

    The Tractor that burns a little bit of oil has the German diesel in it. The other three are international DT motors and a 8.3 Cummins on the combine.

    Dads Truck has a Catapillar in it my pick up has a Cummins and My brother has a Duramax.
     
  2. bwalker

    bwalker Pinnacle OPE Member

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    Delvac 1 should be better as it costs alot more. In 15w40 oils I really like Chevron Delo. Although I have seen too many good results with Rottella to write it off.
     
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  3. bwalker

    bwalker Pinnacle OPE Member

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    I have never seen Mobil One lead to deposits inside a motor.
     
  4. RI Chevy

    RI Chevy DollyKitaStihlvarna Runner

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    According to Blackstone Labs, regular Mobil 1 Delvac 15W40 gets very high ratings.
     
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  5. huskihl

    huskihl Sausage Fingers Forever

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    I don't know, as my sample size was small. This was in a 1980 k-30 with a 350 in it. I bought the truck from my wife's uncle who worked for GM and claimed it had been run on mobil1 since it was new. It developed some poor running qualities and I thought it was the carburetor. I had a holley 650 already mounted to an aluminum intake. When I pulled the old intake off is when I found all the black carbon laying in the lifter valleys. An inch thick in the front left and right corners. I scraped out what I could and vacuumed it out, but there was still quite a bit left in there. After installing a different carburetor and manifold, the problem continued to get worse and worse. I later learned that the cam in those Motors only lasted about 65 to 70 K miles, which is what the truck had on it, so I picked up a cam for it. While installing the new cam I noticed that Rotella T had cleaned everything off Back Down to cast iron
     
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  6. bwalker

    bwalker Pinnacle OPE Member

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    The detergent in Rotella is the same one and in similar quantities to those used in all diesel oils.
     
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  7. bwalker

    bwalker Pinnacle OPE Member

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    Not blow by. Its caused by soot left over from combusting diesel.
     
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  8. Marshy

    Marshy WFO Cutting

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    Technically, the only way soot from the combustion process gets a chance to interact with the oil is blow by, is it not?
     
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  9. RI Chevy

    RI Chevy DollyKitaStihlvarna Runner

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    EGR doesn't help with soot either.
     
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  10. bwalker

    bwalker Pinnacle OPE Member

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    No. On the compression stroke the pressure generated pushes the rings into the cylinder walls sealing them. On the exhasut stroke there is much less pressure and soot particles that are stuck to the cylinder walls slip beneath the rings. This soot ends up in the oil, which turns the oil black almost immediately. EGR makes the problem much worse by pumping exhaust gas into the intake manifold.
     
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  11. PissRev

    PissRev Pinnacle OPE Member

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    I've used Rotella 15w40 in every small engine, motorcycle, and ATV for the past 30 or so years with no problems at all. It works great for motorcycles and ATVs with a wet clutches because it meets the JASO MA rating.
    IMG_20181106_1651445.jpg
     
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  12. bwalker

    bwalker Pinnacle OPE Member

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    I have used HD 15W40 diesel oils in small engines and in two stroke motorcycle gear cases for some time. Delo, Delvac and Rotella have all worked well and are over kill for these applications.
     
  13. Wolverine

    Wolverine Do you even burn wood bro?

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    The question is, would you run T6 in the latest, greatest I4 crotch rocket spinning at 16k?
    I did once and shift quality was terrible.
     
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  14. whitesnake

    whitesnake Super OPE Member

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    I Do and have for many years. Never had a problem in 600's, 750's and 1000's. Shifted better than factory. I changed my oil a little more often than most but still. I put a lot of hard miles on my R1 with that oil. There's a lot of track guys that swear by it too. Also a bunch of people that think it's junk and you have to run Motul (good oil just saying)...who knows.
     
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  15. bwalker

    bwalker Pinnacle OPE Member

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    Probably not, but with that said I have never had Rotella cause poor shifting in anything I have used it in.
    What I would run is Delvac 5w40.
     
    Last edited: Nov 7, 2018
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  16. huskihl

    huskihl Sausage Fingers Forever

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    @bwalker
    Any idea as to the cause? MS362

    20181106_161837.jpg
     
  17. jakethesnake

    jakethesnake I Am The Snake

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  18. bwalker

    bwalker Pinnacle OPE Member

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  19. RI Chevy

    RI Chevy DollyKitaStihlvarna Runner

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    Yikes. That poor saw. Those pistons are UGLY!!!! WTF
     
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  20. D B Cooper

    D B Cooper 44:1 Bel-Ray MC1

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    Rotella 15-40 gives nice smooth clutch action on the harley.
     
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