Red Line Shock Proof Oil
Elite HDF Member
Joined: Jun 2006
Posts: 3,698
Likes: 11
From: Longview, Washington
I do know mine shifts much smoother and neutral is much easier to find. The clunk is still there just not as loud. I didn't expect a miracle anyway. Most Harleys clunk, don't they. Nature of the beast.
Where Redline really shines is in the summer when things get really hot. That is when I would really notice more noise from my trans. Ran it all last summer and things were much quieter.
Like most of the other stated, give it some time. It is well worth the difference in price.
I think you'll be singing a different tune later.
Where Redline really shines is in the summer when things get really hot. That is when I would really notice more noise from my trans. Ran it all last summer and things were much quieter.
Like most of the other stated, give it some time. It is well worth the difference in price.
I think you'll be singing a different tune later.
Road Master
Joined: Jan 2008
Posts: 874
Likes: 2
From: Southern Arizona
I just put Redline Heavy Shockproof in the tranny on my Fatboy and also put Redline 20/60 in the engine. It's the first time I've used the Heavy Shockproof, but I use the 20/60 each Summer. The tranny is shifting easier and the engine is quieter.
Intermediate
Joined: Sep 2009
Posts: 37
Likes: 0
From: Kitimat, B.C.
+1 for the Red Line. I just switched out my '09 RK from Amsoil 75-140 to V-Twin with shock proof. After a quick ride, I found the Shock Proof to be a big improvement over the Amsoil. The shifting was noticeably quieter and finding neutral was no problem. That's my 
.
.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Road Master
Joined: Apr 2007
Posts: 929
Likes: 1
From: Blue Springs, MO
I find that on my 09 Ultra it does shift better and even my buddy on his GL1800 noticed. He asked if I did somthing different and I told him about the oil and said that he was very impressed. He was even thinking about picking up some. JMO I think it is has been the best oil I have put in. Ride safe.