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American Big V-Twin Lube Thread

  1. #26
    BMW track whore e30addict's Avatar
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    Re: American Big V-Twin Lube Thread


    Quote Originally Posted by PurplePackage View Post
    75w-90 gear oil all around. Bigger numbers mean its better oil.

    https://www.walmart.com/c/kp/75w-90-oil
    Not even close to accurate.....

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  2. #27
    Kosher Assassin Stoneman's Avatar
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    Re: American Big V-Twin Lube Thread

    Quote Originally Posted by e30addict View Post
    75w90 gear oil and 20w50 motor oil is pretty similar in viscosity.

    That said, the different chemical properties in some gear oils may not be compatible with components in your transmission. I'd research it way more before making a change like that.
    Quote Originally Posted by e30addict View Post
    Not even close to accurate.....
    This is why I'm curious as to what the Purple One is running that in. I'm sticking to basically what's specified/recommended.

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  3. #28

    Re: American Big V-Twin Lube Thread

    I use Amsoil 20W-50 Synthetic V-Twin Motorcycle Oil for everything. In my 2000 Road King..

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    Last edited by MUZ720; 04-21-21 at 02:19 PM.

  4. #29
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    Re: American Big V-Twin Lube Thread

    Quote Originally Posted by MUZ720 View Post
    I use Amsoil 20W-50 Synthetic V-Twin Motorcycle Oil for everything. In my 2000 Road King..
    Yup. Pretty much same here. Although this go 'round I'm going with Klotz Transmission/Primary lube.

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  5. #30
    Kosher Assassin Stoneman's Avatar
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    Re: American Big V-Twin Lube Thread

    And...just got notified the fluids & filter have been delivered. Tires should be here in about a week...

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  6. #31
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    Re: American Big V-Twin Lube Thread

    Quote Originally Posted by e30addict View Post
    Not even close to accurate.....
    stuff you read on the internet is always accurate

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  7. #32
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    Re: American Big V-Twin Lube Thread

    Quote Originally Posted by Stoneman View Post
    This is why I'm curious as to what the Purple One is running that in. I'm sticking to basically what's specified/recommended.
    For those of us who are wise, we keep to what the engineer said: "anything JASO MA2 certified"

    So I used Mobil 1 for 15 years. Recently made a switch to Motul (green) stuff. Seems to work just as good, but haven't really had more than 1 oil change with it!

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  8. #33
    Lifer Garandman's Avatar
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    Re: American Big V-Twin Lube Thread

    Only owned one briefly but used Castrol Power 1 V-Twin 4T 20W-50. It is pretty widely available.

    https://msdspds.castrol.com/bpglis/FusionPDS.nsf/Files/674DB92D31BE7CE0802583050045159E/$File/BPXE-A3QE84.pdf

    Suspect Rotella T6 meets the same specs.
    https://shell-livedocs.com/data/publ...85fe7599bd.pdf

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  9. #34
    Kosher Assassin Stoneman's Avatar
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    Re: American Big V-Twin Lube Thread

    Moot point until my next engine oil change. My oil & lubes are in, so I'm good for now. May try Rotella next time, who knows?

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  10. #35
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    Re: American Big V-Twin Lube Thread

    Quote Originally Posted by Garandman View Post
    Suspect Rotella T6 meets the same specs.
    https://shell-livedocs.com/data/publ...85fe7599bd.pdf
    Has the right approvals, but not available in 20W-50. Only 5W-40, which IMO is far too thin for an air cooled motor like this.

    I would (and do) run a dino 20W-50 before a synthetic 5W-40.

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  11. #36
    Kosher Assassin Stoneman's Avatar
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    Re: American Big V-Twin Lube Thread

    Quote Originally Posted by nhbubba View Post
    Has the right approvals, but not available in 20W-50. Only 5W-40, which IMO is far too thin for an air cooled motor like this.
    I noticed that too...

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  12. #37
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    Re: American Big V-Twin Lube Thread

    Thinner oils run cooler. Highly speculative, but it's possible a stout synthetic 40 wt runs cooler and still offer better protection then a dino 50 wt. It would be more viscosity stable at higher temps as well. Better NOACK numbers, probably better HT/HS numbers as well. Impossible to prove without "data" but cars speccing 5W or 10W-30 for years suddenly saying a 20wt is okay are good examples. Everyone thought Ford trucks would blow up running 5W-20 but they still went the distance on them.

    There is way more to oil then viscosity and thicker is not always better.

    There very well might be oil analysis results showing stout 40 wts are perfectly safe in these motors, but I haven't looked for them.

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  13. #38
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    Re: American Big V-Twin Lube Thread

    But any thinner and the oil would all be on the ground... Had to be said.

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  14. #39
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    Re: American Big V-Twin Lube Thread

    Bubs, I read zero replies in this thread. For the many years I owned my Buell XB9S (Sportster motor), I ran Rotella whatever-correct-viscosity, changed it every ~3K miles, and had no troubles. I owned that Buell ~ 3 years offhand, with nary an issue.

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  15. #40
    Kosher Assassin Stoneman's Avatar
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    Re: American Big V-Twin Lube Thread

    Well that was different. Engine, transmission & primary all done with shiny new Klotz. Still wrapping my head around having to do THREE different points for lubrication though. Odd, but whatever...

    Supposedly, when I bought it from the dealership at 5000 miles they did a full servicing with would have included those that I had just done. I'm beginning to REALLY doubt it. Very low engine & trans oil. And whichever monkey put the oil filter on and replaced the screws on the clutch (derby) cover was a fuckin' idiot. I don't know how they didn't snap the derby cover screws. I had to turn one into a flat head screw to get it out (originally Torx). I'll be ordering new ones by week's end. I'm guessing they used foot lbs instead of INCH pounds when tightening.

    My buddy fab'd a tool for getting stubborn oil filters off. Thank goodness! Again, whoever installed that is a fuckin' moron. I got the K&N replacement with the 17MM nut on the end for easy removal. I didn't really have a problem with getting oil everywhere. I just made a chute from a cardboard box & placed it under the filter as I removed it. Barely a drop. I made a similar chute for filling the primary.

    I like that everything other than the primary was measured on it's side stand and everything was drained on it's side stand. By the way - do 'they' really call them jiffy stands? WTF is up with that?

    All in all, it only took a couple hours. Would have been less if I didn't fuck around so much. Each time I pulled a drain plug, I'd grab a beer and take a couple puffs to make sure everything was drained thoroughly. I've never had a bike where I had to change more than one lube areas. Well, except the Raptor I guess. But that's just two drain points for the same oil. Still very odd to me, but it is what it is.

    I'll probably poke around on Amazon for one of those primary fillers and a form-a-funnel that can be used under the oil filter. The cardboard worked fine, but I'd rather just grab these next time and go at it.

    We'll see how the bike & I like the Klotz. I only managed a 5 mile ride home from my buddy's when all was said & done. At the very least, it smells really good!

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  16. #41
    Burns retinas nhbubba's Avatar
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    Re: American Big V-Twin Lube Thread

    Yes on all counts.

    Honestly the worst part about the Harley in my mind is the use of SAE fastners. This is the 21st century for crikes sakes! And then the front end is mostly metric anyway. Dumb.

    The multiple oil fills is the runner up. It is vaguely dirt-bike like, although as you point out it is different fluids in different components. And honestly it isn't that big of a deal.
    Every time I check the oil I am reminded at how nice, chunky and overbuilt the oil cap and dip stick are. Would I rather a japanese style sight glass instead? Maybe. Does the dip stick with reading instructions STAMPED ON IT work for me? Yep.

    The "jiffy" thing is weird. I will never say that word outloud in reference to a side or kick-stand.

    Go ride the piss out of it!

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  17. #42
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    Re: American Big V-Twin Lube Thread

    Quote Originally Posted by nhbubba View Post
    Yes on all counts.

    Honestly the worst part about the Harley in my mind is the use of SAE fastners. This is the 21st century for crikes sakes! And then the front end is mostly metric anyway. Dumb.

    The multiple oil fills is the runner up. It is vaguely dirt-bike like, although as you point out it is different fluids in different components. And honestly it isn't that big of a deal.
    Every time I check the oil I am reminded at how nice, chunky and overbuilt the oil cap and dip stick are. Would I rather a japanese style sight glass instead? Maybe. Does the dip stick with reading instructions STAMPED ON IT work for me? Yep.

    The "jiffy" thing is weird. I will never say that word outloud in reference to a side or kick-stand.

    Go ride the piss out of it!
    Yeah, I meant to mention that too. The fancy, over engineered dip sticks were well marked & all. But man, a site window would be SO much better.

    And no. I'll never refer to the side stand as "the jiffy stand".

    My drain plugs were all metric, BTW. The derby cover was Torx.

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