I was inquiring with local dealer about 15k service on my 08 ultra. He said I can run the same synthetic 20w-50 in all three.. Ups or Downs?

 

You can & many do ... I prefer Redline trans fluid in the trans vs synth motor oils.
The CVO models I think still come with Syn 3 in all 3 holes... may have changed

I use...
Engine- Mobil1 VTwin 20-50
Primary - HD Formula+
Trans - Redline shock proof

Just what I prefer.....

 

Lots of people do the multiple oil thing.
When I did my 1K service at the dealer, I had them do a synthetic service. When I did my own 5K service I just did Mobil1 engine oil. Now I'm ready for my 10K service and am pretty much wondering the same thing since I need to drain all three holes.

Good luck!

GSF

 

I run it in all three. Mainly for the convenience. After 15K everything is good.

 

I just serviced my bike today:

Mobil 1 V-twin 20W50 in the motor
Redline shockproof heavy in the trans
Redline V-Twin Primary in the Primary

I like that I can get Mobil 1 at any auto parts store if I'm on the road and need to top off.

The redline shockproof heavy in the trans is recommended by Baker for my F6F
this is my first try with Redline V-twin primary.

 

HD Formula Plus in the Primary, Lucas syn 50 in the engine and Lucas syn 75W140 gear in the gear box.

 

Mobil 15-50 for the motor
Redline shock proof in trans
Rotella 15-40 in the primary

 

I run Modil 1 V-Twin 20W-50mfg in all three holes. Did on my last bike. Everything seems smoother and quieter IMO. Bottom line is ask around think over what everyone tells you, then go with what makes sense to you and what works best for you.

 

HD Formula Plus in the Primary, SYN 3 in the Motor, and Redline Shockproof Transmission Fluid in the trans. I have used SYN 3 in all 3 in the past, but it seems to be a waste of money putting it in the primary. This is the first time using Redline in the transmission and so far I've ridden it two days and it's smooth as butter. By the way around here the SYN 3 is only a buck more per quart over Mobil 1 so I just buy that since I have to get my filter at the dealership (I refuse to use other filters! YouTube the cutaway videos if you want to know why.)

 

[quote=Sailrider 1;10841430]I just serviced my bike today:

Mobil 1 V-twin 20W50 in the motor
Redline shockproof heavy in the trans
Redline V-Twin Primary in the Primary