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Thread: What is the best Motor Oil For my 06 Uly

  1. #1
    Hullo all,

    I'm looking for some advice. My manual says the best motor oil is 10w40, but I noticed on the main forum that people were saying the best oil is 20w50 Synthetic... What do you Uly riders use?

  2. #2
    Senior Member BuellyBagger's Avatar
    Join Date
    Apr 2010
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    Nebraska City, NE
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    3,556
    I use Harley Screaming Eagle 20w50 synthetic in mine. Assuming you are riding in a climate thats close to spring summer in nebraska (temps from 55-100) i think 20w50 would be just fine 4 u...

  3. #3
    Senior Member
    Join Date
    Feb 2008
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    1,224
    another oil thread hehe ok my .02 Mobil 1 V-Twin 20w 50

  4. #4
    i use amsoil 20w-50 it handle high temp.what is the best trans. oil

  5. #5
    Senior Member
    Join Date
    Aug 2008
    Posts
    365
    Unless you're riding in 5C or cooler, 10w40 is too light. Use a good quality synthetic 20w50. RP, Mobil 1, Redline, Lucas etc...
    There's alot of good oils out there, best bet is to check local availability and stick with something good ( def. synthetic whatever the brand).

  6. #6
    Harley Davidson recommends the use of its own synthetic-blend oil and when that's not available, 20/50 oil for Diesel Engines.



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