Engine oil Mobil or AMSOIL

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 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

Mobil1

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.

My wife drove her 2008 Passat 2 miles per day for six years. As you can imagine, during these very short drives in winter, the oil became diluted - this was born from sever UOAs. So, I changed the oil every 1,500 miles and the oil and filter every 3,000 miles. Over-kill perhaps but based upon my personal expectations, worth the time and money. We used Mobil 1 0W40....which sheared to a 0W30 fairly quickly and stabilized.

my valvetrain was always noisier when I used to run Mo1 0w40.