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Is there a preffered engine oil for a 94 IDIT?

Discussion in '6.9L IH & 7.3L IDI Diesels' started by sparky8251, Oct 15, 2019.

  1. DrCharles

    DrCharles Full Access Member

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    My local O'Reilly's sells them for $9.99 (regular price)...
     
  2. Thewespaul

    Thewespaul Supporting Vendor Supporting Member

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    The old stock is selling for $9 still, the newest filters I’ve seen are double that now.
     
  3. Big Daddy John

    Big Daddy John Full Access Member

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    Bet it’s still cheaper than a new one!!
     
  4. troutwest66

    troutwest66 Ricer-Roni The IDI Treat

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    Another vote for the Delo 400 15w-40. I had a '94 for 14 years. Started out with Rotella for a bit with no problems but switched to Delo after a year or so and never had an internal engine issue.
     
  5. sparky8251

    sparky8251 Registered User

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    Going with Delo 400 for now. I want to run a strong synthetic a few times just to clean the engine, but currently I can't afford to patch any leaks that might result... And ofc, once cleaned I'll return to Delo or similar since apparently these trucks can't go all that far on oil anyways.

    Speaking of... I cant find any oil change interval info on this thing. No owners manual and I can't find a repair manual for a diesel engine... 3k miles or is it longer?
     
  6. Philip1

    Philip1 Registered User

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    The sticker on my engine says 5000 miles normal conditions or 3000 miles severe conditions
     
  7. sparky8251

    sparky8251 Registered User

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    Cool. Thanks much!
     
  8. 420Bullnose

    420Bullnose Registered User

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    Rotella Shell T6 Full Synthetic 15W-40

    20190819_200250.jpg
     
  9. FordGuy100

    FordGuy100 Registered User

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    WTH I didn't know they have a full synthetic 15w40
     
  10. 79jasper

    79jasper Chickenhawk

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    Lol t6 has been that way and been out awhile.

    Sent from my SM-N960U using Tapatalk
     
  11. FordGuy100

    FordGuy100 Registered User

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    I guess they have a 0w40 has well. You would think they would give it a different T#
     
  12. chillman88

    chillman88 Supporting Member Supporting Member

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    I think the T seems to be:

    T4 - Standard conventional oil
    T5 - Synthetic Blend
    T6 - Full synthetic

    At least from what I've seen.
     
  13. Oldiron

    Oldiron Full Access Member

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    2nd on the t6 syn 15-40. (I get from Wal-Mart) I live where it is more often cold then hot and figure it helps with cold starts. I also use the powerstroke filter for the extra quart. Been changing at roughly 3k and cant remember how much ive had to add. I'm installing a new intake and banks crank case vent with RDT. Well see how it does.
     

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