Castrol Vtwin 20-50

ya get more flavor with lard...........my favorite!!!

ya even john force is having trouble with castrol & after 25 years with them , But i have run castrol in a lot of my mopars for many years , & run amsoli in all my engines now

I just wished Amsoil was more readily available, especially when your on the road. We all say oh I'll carry a quart or two with me, but do we really and what if you need more than a quart or two.

you look on a computer & find it , My brother said he could'nt find it eather so stop running it , I looked it up when he was here & found a dist right down the street from him in Alb NM , ,& yes I do carry a qt in my saddle bag , but worsts come to worst any oil is better then no oil

he said on race day a couple of week's ago he was having trouble signing with them & after one of his passes he did'nt mention castrol at all but did say all the rest of his sponcers

Mobil 1 V-twin... works great
yes there are modifiers in V-twin that are designed to
improve the ability to help air cooled engines
that are NOT in the Mobil 1 auto....

HD in it's manual does approve the use of diesel rated oils
for the Vtwin...

20W-50 is not the only approved viscosity, read the manual
it depends on the temp range where you live. Colder
areas are allowed to used thinner viscosity for easier start.

If you live in MN and are not changing to a thinner oil
in the colder months you can.... you don't have to, but you can..

Mobil 1 red cap has been used by many for years
in vtwins it will work.

Dyno oil will work, just change it

Better thing about syn is it doesn't break down
as quickly at the higher temps in the air cooled HD
engine, so it cleans better, longer, you will have
less opportunity to sludgeificate your engine..

I wouldn't run a straight weight oil unless I was racing a drag bike, JMO but
we need the sliding viscosity of a multi-weight such as 20W50.

You have to remember that our machines today are built to much
tighter tolerances than they were in the old shovel days, heck even
more so than the original evos. You have to get the oil flowing quicker
today.

The oil when cold flows like a 20 weight, to help get moving through all the passages
and assist with better lubrication at start up, this is critical, as we have dry sump
engines, you need to get that little pump moving and oil flowing up the passages
into all the crevasses to assure you won't have metal on metal.

Straight weight won't do that.... a 60wt is 60 at 20 degrees and 300 degrees.

Stick with the recommended sliding viscosity weight lube.

Now I do think Amsoil or one of those guys has a 60 wt syn...

I like Redline V-twine Syn oil in the engine, trans and primary. I know each to their own but its been a good oil for me and its readily accessible here. I always carry an extra quart on long trips just in case.
I do not like the HD Syn3 oil, used in a bike once and started getting metal flakes on the magnet. That is when I switched to Redline, no more metal flakes.

Sorry Cardboard to me Syn3 is junk, will never use it again. There are far better Synthetic motorcycle oils out there than Syn3. I also noticed that it made noises in the engine where other oils didn't and Redline helped the engine run quieter.

Won't use Syn3,
the manufacturing company
for HD is Citgo aka Chavez Oil....

That's another good reason.