I just got my BSR a 2013 heritage with a 103, and I had the plan to change out all of the fluids. Unlike my 05 SE, the manual only suggests SYN3 in the engine, not in the other two holes. Major PITA since I live outa town, and will have to run in for the recommended lubes. At any rate, when I was getting started, I found what I thought was the oil drain plug on the engine sump, and when I pulled it, I only got maybe 1 cup of oil to drain! Okay, NOW it's time to look at the manual, and I found the oil tank drain attached to the rear frame tube. Once I pulled this plug and opened the filler cap, I got the oil to drain. My questions are as follows:

1. Do any of you use SYN 3 in all of the holes on a 13 model?
2. What is the purpose of the plug that I pulled initially, if not to drain the engine oil?
3. Is this a dry sump motor
4. Why did I get any oil out of this hole, and is it something that I need to add somehow

 

https://www.harley-davidson.com/en_U...IL/file-7.html

Looks like on the 2013 Harley change their mind about using syn 3 in all 3 holes. I like using a product for it's intended use anyway. Up in the great white north I would run either 20w-50 or 10w-40 depending on the weather you ride in. Put some AFT or MTL in the primary, and 75w-90 gear lube in the tranny. But you could run formula+ in the primary and tranny as recommended by HD.
Yes HD's are dry sump that is why only 1 cup came out of the crank case plug you pulled. It will fill itself when you change the oil.

 

Yep, what he said. Shell Rotella T 15w 40 works great in the primary and it's available just about everywhere.

 

Sounds like you pulled the crankcase sump plug.
Use caution putting it back in because the case can get damaged.

There are some threads about this here if you do a search.

 

isint that a diesel oil okay for the motor not primary or clutch just my veiw

 

Well, there are lots of metric bikes that use Rotella T in their motors. That oil is also run thru the trans and clutch, without issues. It's tough stuff that work perfect in that application. I've been running Rotella t 15/40 in my primary for years, and I like it. It helps reduce clutch drag, that causes first gear bang. I would be will to use it in my trans if nothing else was available. It's not that much thinner then 70/90 wt gear oil, and it resists shearing also.,,