Oil Question - 5w-20 Full Synthetic

Discussion in 'Engine & Performance' started by Black Pearl, Jul 22, 2011.

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  1. Jul 22, 2011 at 3:52 PM #1
    Black Pearl

    Black Pearl Full Access Member

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    Previous owner used Motorcraft 5w-20 Full Synthetic.....

    I was just wondering what others are using. Temps here in Utah avg for 0-100.

    Last two trucks I had both used Mobil 1 0w-40 Full Synthetic. So the 5w-20 caught me a bit off guard. Looking for thoughts.

    Thanks
    Vj
     
  2. Jul 22, 2011 at 3:57 PM #2
    TFIDDLE

    TFIDDLE VEEEE TEn

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    im wonderin this also, because i have no clue wat oil is best
     
  3. Jul 22, 2011 at 3:58 PM #3
    ex4banger83

    ex4banger83 Safety 3rd

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    which engine you got? the comp at work actually reccomends 5w-30 for the I6 I know for sure but I think its the same for the v8's
     
  4. Jul 22, 2011 at 4:26 PM #4
    supercrewzn

    supercrewzn Full Access Member

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    Nope 5w-20 synthetic blend oil is what u should use.
    I run motorcraft filter and motorcraft 5w-20 synthetic blend
     
  5. Jul 22, 2011 at 4:35 PM #5
    ex4banger83

    ex4banger83 Safety 3rd

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    I'll get a shot of the computer reccomendations at work but 5w20/5w30 sounds about right
     
  6. Jul 22, 2011 at 4:41 PM #6
    TFIDDLE

    TFIDDLE VEEEE TEn

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    So will 10w30 hurt my motor

    Sent from my SCH-I500 using Tapatalk
     
  7. Jul 22, 2011 at 4:42 PM #7
    Bdons-SD

    Bdons-SD Anti spark plug!

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    No but tractor oil will.


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  8. Jul 22, 2011 at 4:45 PM #8
    supercrewzn

    supercrewzn Full Access Member

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    No 10w-30 won't hurt but the oil cap tells you what should be in the motor....
     
  9. Jul 22, 2011 at 4:46 PM #9
    ex4banger83

    ex4banger83 Safety 3rd

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    no, I ran it in my truck for awhile
     
  10. Jul 22, 2011 at 4:50 PM #10
    ex4banger83

    ex4banger83 Safety 3rd

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    the print on my oil cap has wore off over the past few years but mine had a milky substance on the inside of the cap and my stepdad saidto try thinner oil so I went to 5w-30 on my last oil change so we will see what happens
     
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