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20w50 oil

Discussion in 'XJ Technical Chat' started by Scottie1, May 12, 2018.

  1. Scottie1

    Scottie1 Active Member

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    I have had my cam chain adjusted on my 1982 750 Seca but still have a bit of noise coming from it. I was told to try thicker oil I am running 10w40 at the moment would 20w50 be ok to use or can I add a quart of 20w50 to 10w 40 to thicken it a little bit. I live in South Carolina where it’s now hot weather when I ride.
     
    Scottie1, May 12, 2018
    #1
  2. Chitwood

    Chitwood Well-Known Member

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    Fwiw, I live in Wisconsin and run 20w-50. Don't ride much when it gets real cold.
     
    Chitwood, May 12, 2018
    #2
  3. Scottie1

    Scottie1 Active Member

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    I didn’t want to run the wrong oil just Incase anything happens. I will try 20w50 see if that helps
     
    Scottie1, May 12, 2018
    #3
  4. XJ550H

    XJ550H Well-Known Member Premium Member

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    you should be running 20w-40 by spec for your temps 10w30 is for under 60 degrees
     
    Last edited: May 12, 2018
    XJ550H, May 12, 2018
    #4
  5. XJ550H

    XJ550H Well-Known Member Premium Member

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    XJ550H, May 12, 2018
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    DarbyC likes this.
  6. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    What does the noise sound like?
    A short video would be helpful.
    Oil won't make noises go away, and some noises are supposed to be there.
     
    Last edited: May 13, 2018
    k-moe, May 12, 2018
    #6
    kerriskandiesinc likes this.
  7. Jetfixer

    Jetfixer Well-Known Member

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    Clappy valves are happy valves. Noise in an aircooled engine is normal and will never go away completely. 20w40 is fine just do not use synthetic oil can cause clutch slippage and starter clutch problems . Kmoe has a good write up on oil read his thread. I have tried 20w50 and noticed no difference in noise but that is all subjective .
     
    Jetfixer, May 13, 2018
    #7
  8. Scottie1

    Scottie1 Active Member

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    Here’s a video of the top half of engine where the noise is coming from
     
    Scottie1, May 13, 2018
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  9. Scottie1

    Scottie1 Active Member

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    Ah it’s to large to post grrrr
     
    Scottie1, May 13, 2018
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  10. Scottie1

    Scottie1 Active Member

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    Scottie1, May 13, 2018
    #10
  11. kerriskandiesinc

    kerriskandiesinc Active Member

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    Doesn't sound normal, sounds a bit loud even for an air cooler.....the normal XJ whistle doesn't SEEM to be there.....
    Can you repost, and rev it off idle, up and down??
     
    kerriskandiesinc, May 13, 2018
    #11
  12. Scottie1

    Scottie1 Active Member

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    I will do it tomorrow and post it
     
    Scottie1, May 13, 2018
    #12

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