Motor oil: current recommendations?

Discussion in 'General IH Tech' started by theloneduck, May 22, 2020 at 11:33 PM.


  1. theloneduck

    theloneduck Farmall Cub

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    I know it used to be rotella t-3 but what’s the recommendation now?
     
  2. scout2000

    scout2000 Dreams of Cub Cadets

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    You kind-of left things wide open there.

    Between the Rotella comment and your signature line with a '79 S2 listed, I'm assuming you probably mean for a Nissan diesel or turbo diesel.

    I have a Cummins 6BT powered vehicle and I Rotella myself.

    OTOH, I suppose maybe you could have an IH SV V8 or inline 4, but probably not the AMC inline 6. I believe that those were out of the picture by 1979.

    What do you need oil for?
     
  3. theloneduck

    theloneduck Farmall Cub

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    Sorry. It’s a 79 scout 2 with a v8 345
     
  4. mallen

    mallen Y-Block King

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    A CJ/SN 15W40 oil with 1200ppm zinc works well. My owners manual recommends 20W40. The 15w range is almost completely a subset of 20W. CK oils I believe have the zinc removed, so they are out. In fact many diesel engines specify they should not be used. Google u the petroleum quality institute and look for ones they tested that have 1200ppm zinc. Be careful, often the bottles look the same except they now say ck instead of CJ. You want the "universal" oil that works in both spark and compression ignition engines. (It will say its for both on the label and be rated both ck and sn)
     
  5. BinderBookie

    BinderBookie High Wheeler

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    Sorry, you got that backward Captain Sacto (remember him?). It's the CK4/SN that dropped the ZDDP to get the dual purpose rating. The CK is still holding at between 1050 and 1200 ppm , depending on brand.
     
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  6. RinTX

    RinTX High Wheeler

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    I use Rotella T4.
     
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  7. theloneduck

    theloneduck Farmall Cub

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    Got it. I knew there had been some changes, just couldn’t find what they were. Thanks!
     
  8. MrKenmore

    MrKenmore Y-Block King

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    Shell Rotella T4 15W/40
     
    Last edited: May 23, 2020 at 1:53 PM
  9. winchested

    winchested Y-Block King

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    15w40 with a little bottle of zddp dropped in is fine too.

    Lucas hot rod oil is high zddp too. Cheap at the local Napa. I just run cheap brand 15w40 diesel oil from the Cdn tire.
     
  10. 2dafloor

    2dafloor Farmall Cub

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    You ll all die but I still run Havoline 10w40 on all my older STOCK flat tappet cams....im a horrible person I understand. Not a big fan of 15 w oils on start up on gas motors.
    0w40 Mobil one euro formula in my Gen3 hemis and LT4 engines.
     
  11. Ron A

    Ron A High Wheeler

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    Valvoline VR1. If you are thinking 15-40 is to heavy.
    [​IMG]
     
  12. scoutdude

    scoutdude Farmall Cub

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    I got some Amsoil Zrod. Has plenty zinc and a lot of additives to help with older cars that don’t get driven a lot. It’s 10 30
     
  13. TravelerMan79

    TravelerMan79 Farmall Cub

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    Good thing I read this thread as I was going to dump some 10W30 into her once I had a chance. Most of my Land Cruiser buddies run the Shell Rotella 15W40 in their diesels. Damn some of that was just on sale locally.
     
  14. Ron A

    Ron A High Wheeler

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    Had to look him up. Before my time, but not before Ted Ornas time.
    [​IMG]Captain Sacto was a 1950's and 60's childrens' show hosted by Harry Martin as Captain Sacto, for KCRA Channel 3 Sacramento, California (USA) showing such animated show like "Crusader Rabbit).
     
  15. 2dafloor

    2dafloor Farmall Cub

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    I ran the Traveler brand 15w40,its Tractor supply brand, in the 345. Lots of smoke and lots of valve train noise. Swapping back to my trusty 10w40 killed all that. I used the last jug on my old 318 with a bad rear main seal leak and it smoked like a chimney and the acrid smell. I really should have given that away.
     
  16. winchested

    winchested Y-Block King

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    That's not the oils fault. That's a worn out valvetrain.

    My 345 hasn't burnt or used a drop of oil in 1000 miles.
     
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  17. Tom Mandera

    Tom Mandera Dreams of Cub Cadets

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    On my stock Scouts, I run whatever is handy - if I remember, I give it some Comp break-in additive for the extra ZDDP.

    On the high-zoot 'binders, it's was Valvoline VR-1 Racing, but when the parts store didn't have any 10w30 in the back, I switched to ordering Brad Penn.
     
  18. mallen

    mallen Y-Block King

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    Some things wrong. That's not a slight difference. That's huge. Since it doesnt happen on most peoples it suggests there's something quite different about your engine. ID want to get to the bottom of why the thicker oil (which is within specs of oils recommended by ih) causes severe problems. Was it really cold? Obviously , if it doesnt work, you use what does, but something odd like that makes me wonder whats going on. I never used the traveler oil myself before last week. I ran it and idled it for about an hour and OT sounded great with no smoking or anything. Well after the initial smoking , but that was expected. Water had gotten into two of the cylinders and the motor was stuck. I had to vacuum out the water and put transmissiion fluid in the cylinders for a day and then rock it back and forth in gear until it finally came loose and vomited up chunky rusty water and oil all over the place. But then it started and actually runs really good after the tranny fluid burned off. And that's with the traveler 15w40
     
    Last edited: May 26, 2020 at 9:44 AM
  19. 2dafloor

    2dafloor Farmall Cub

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    Correct,were talking a 1975 345 and a 1978 318. Not every engine I own is brand new.
     
  20. BinderBookie

    BinderBookie High Wheeler

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    I grew up in Sacramento, so I remember Harry Martin/Captain Sacto. We had the same dentist so I actually got to meet him a few times as a kid. There was another guy that did late night scifi that I can't remember.
     

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