As the title says, I just changed the fluids in all 3 holes. Amsoil in the motor, Redline heavy shockproof in the transmission, and Redline V twin primary fluid. After the change, the primary is very noisy. It is most noticeable when idling in neutral on the sidestand. Not sure if the sound is coming from the compensator or the chain, it sounds like a metallic rattling sound. The sound does not change if I pull in the clutch lever, so I am kind of ruling out the clutch at this point. It was very quiet until I changed the fluid about 25 miles ago. I put the recommended 38 oz of fluid back in it. Bike is a mechanically stock 2015 SGS with about 6500 miles on it. I am the second owner, and have only had it for a little over 3 months. I bought it from a dealer, and don't have the service history.

The fluid that I drained out of the primary when I changed it was a little dirty, and there was a small amount of metallic dust on the magnetic drain plug, but nothing unusual. And the primary was very quiet until I put the Redline in it. At this point, I am probably going to drain the Redline out of the primary and put something else back in it. I don't think the primary fluid had ever been changed, as it is a low mileage bike. It probably had whatever they put in it at the factory. Hopefully, the noise will go away after I change to another type of fluid.

I was just wondering if anyone else has had the same experience with the Redline Primary Fluid? I had always heard how good it is, and am just a bit surprised by this.

 

Hi! Try FORMULA+.
In a manual for SG of 2015 38 oz are written, but in a manual of 2016 for the same SG 32 oz are written. I don't understand where the truth. Maybe you have filled in more oil than it is necessary.

 

When the Rushmore bikes came out they changed the compensator design. I was a avid user of synthetics in the Primary. Around 4000 miles I started getting loud mechanical noises in the primary particularly at idle. Happened to have some Formula + in the garage. Swapped the syn for the formula and the noises went away immediately. I suggest you try it.

 

Formula+ is what I ended up using in my 2014 Ultra Limited. Tried several different brands of synthetics and found that F+ worked the best, and I put 50,000 miles on it.

 

Use Formula + and the noise will go away

 

I use Valvoline motorcycle oil 20-50 weight it's M/C Wet Clutch Specific. Because it's pretty inexpensive at $4 a quart at WM I change my primary every 3k miles. I'm always surprised to see how much crap is stuck to the magnetic drain plug at 3k miles there's no way I run it another 2k miles with all that crap still stuck to the magnetic plug I see coming out of my primary. To prove my point, My 2010 still has my original stock compensator in it. I think a lot of these compensator failures are do to the 5000 or more mile oil change intervals and also I've been told by a Harley mechanic that he only puts in one quart, not 38 oz's. When you guys take it to the dealer are they charging you for one quart or two for the primary oil? I believe the Formula+ comes in a 32 oz container, If their only charging you for one they are not putting in the 38 ozs that's called for.

 

I think starting with Rushmore bikes the SE compensator is used and likes Harley Formula+ oil.


PS: I fill all 3 oils to a level to avoid conflicting ideas about how many Oz's to use.

 

Use Formula plus or Your compensator will sound Like "a bucket of bolts" at hot idle.

 

 

At the 1,000 mi check up on my 2016 Ultra Limited I mistakenly took the advice of the "new" service manager at the dealer and had the primary fluid changed to synthetic. Almost immediately the primary got very noisy at idle. A few hundred miles later I was told by a Harley mechanic friend there was nothing wrong with my primary and changing the fluid back to Formula+ would eliminate the noise. I knew a fluid change couldn't make that much of a difference. HAHAHA. Wrong again. I changed back to Formula+. The noise immediately went away. 5,000 miles later the primary is as quiet as the day I took delivery and the "new" service manager has moved on to his next job. Progress.