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Motor oil question

Discussion in 'Stock 1991 - 1994 Explorers' started by Bootless, May 11, 2016.

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  1. Bootless

    Bootless Active Member

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    Hey guys just wondering if I can run 15w40 in my motor I live in Florida so it does get hot here
     
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  3. Wolfie_85

    Wolfie_85 Active Member

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    Why run 15-40? Do you have an oil consumption issue? I would say run 5W-30, as suggested. These engines have issues as it is with oil starvation.
     
  4. Maniak

    Maniak Moderator-Stock 91-94 Staff Member Moderator Elite Explorer

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    We have run 10w-30 and 5w-30 full synthetic (Mobile 1 and Mag1) oil mostly on Wix filters since we have owned our '92 explorer...

    At 355k miles I rebuilt the motor due to a cracked heat (and I figured it should have it)... It really didn't need a rebuild. I only have another 50k or so miles on the motor since the rebuild...

    We are in Arizona and it sees temps ranging from low 20f to 115F.

    I know it's not the same motor but our sohc in our 2006 Mustang runs 5w-30 and is now over 300k miles...

    What I'm saying is I don't think you need the thicker oil due to the temps....

    ~Mark
     
  5. natenkiki2004

    natenkiki2004 Blue Bomb!

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    As said, no need for the thicker oils. If you want a more robust oil, go for a full synthetic or grab some Rotella T5 10w-30, it's an HDEO that will stand up to shearing under heat more. I prefer to use it in small air cooled engines since they can run hotter. Really though, you'd be fine with a premium synthetic oil. I wouldn't run it on 10k oil change intervals, maybe 5k so it doesn't have a lot of shearing going on.

    Remember though, a properly working cooling system will make sure your engine runs at the same temp that mine does in the dead of a north Idaho winter.
     
  6. Bootless

    Bootless Active Member

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    The reason I ask is I was given 2gallons free
     
  7. natenkiki2004

    natenkiki2004 Blue Bomb!

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    I was in that position a while back with that same weight. I used it for top-ups and mixed 50/50 with 5w-30 in small engines. Toss a half or full quart in with an oil change, it won't be the end of the world. But I personally wouldn't use only that in your Explorer.
     
  8. 2stroke

    2stroke Elite Explorer

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    The answer to your question is, yes, you can run it in your engine with no problems.
     
  9. Maniak

    Maniak Moderator-Stock 91-94 Staff Member Moderator Elite Explorer

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    In that case, Like 2stroke says.. Yes, you can use it.... you just didn't need to switch to it due to the temps in Florida.

    ~Mark
     
  10. Bootless

    Bootless Active Member

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    Well it was given to me free
     

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