Go with ams oil I use to talk mad shit about the product but honestly I’m pretty satisfied with it because Harley’s syn 3 is just become trash leaving lifters ticking on and the bike has always had the Harley tick but it has quieted it all down. Just my opinion though..
I run Lucas in all 3 holes and my bike has been cooler, less noise and shifts smoother than it did when I got it and it had Harley fluids in it.
I use Amsoil in all three, but I use their VTwin kit for my M8. Different trans, primary and engine oils.
I was absolutely amazed at how much smoother and more responsive the bike was.
Ams oil, yes it's overpriced but it is the best and going from stock HD fluids in the primary and tranny it does shift noticeably quieter and it's much easier to find neutral
I use Amsoil for all 3 and ride a 2008 H-D Softail Crossbones
I use [this for crankcase oil](https://www.amsoil.com/p/amsoil-20w-50-synthetic-v-twin-oil-change-kit--4-quarts-with-chrome-filter-hdck/) - now 4quarts = 1 gallon so there's a bit extra in this but it also comes with an oil filter.
I run amsoil. They have specific oil for all 3 holes. Seems to quiet down transmission and primary on my 01 road king
I run Amsoil signature with an amsoil or wix filter, I usually only do 3k intervals to keep the 257 happy though lol.
One step above “full synthetic” is “100% synthetic” from Amsoil. Switched years ago, car has a subtle purr.
Also my main purpose is for wear protection and high temp protection etc which the regular line does exceptionally well
I used Amsoil 5w40 European Car formula or Gulf 5w40 Formula G in my A6 previously. Technically Amsoil doesn't have the have the VW 502 00, 505 00 certifications so I think I will start using Gulf Formula G or GX exclusively in my R, either the 5w40 or 5w30 grade.
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