General Harley Davidson Chat Forum to discuss general Harley Davidson issues, topics, and experiences.
Sponsored by:
Sponsored by:

syn3

Thread Tools
 
Search this Thread
 
Old Aug 23, 2006 | 11:09 PM
  #11  
Mac57's Avatar
Mac57
Road Warrior
Joined: Mar 2006
Posts: 1,807
Likes: 1
From: North Jersey
Default RE: syn3


ORIGINAL: eazy


ORIGINAL: Mac57

Since 30% of the engines cooling is done by the oil that's important.
[sm=confused06.gif]I thought most of the cooling was done by the antifreeze. [sm=icon_stickpoke.gif]
Oh yeah, I almost forgot about the 4-hole Harleys.
 
Old Aug 23, 2006 | 11:11 PM
  #12  
Fastlane's Avatar
Fastlane
Tourer
Joined: Jul 2006
Posts: 357
Likes: 0
From:
Default RE: syn3

I have not seen any good specs for harley synthetic. I use Spectro which has higher specs than other oils, especially for temperature. Mobile 1 is good also, but I quit using amsoil after ridding with a few wrenches. I tried synthetic 20-50 in the tranny and took it right back out, I did not like the way it shifted. I say go with a good gear oil and primary oil.
 
Old Aug 24, 2006 | 11:52 AM
  #13  
oldgeezer's Avatar
oldgeezer
Grand HDF Member
Joined: Dec 2004
Posts: 4,513
Likes: 4
From: Midland, TX
Default RE: syn3

When I switched from Syn3 to Amsoil / Mobil 1, the engine ran quieter and ran cooler. That's enough science for me.
 
Old Aug 24, 2006 | 12:01 PM
  #14  
grumpy irish again's Avatar
grumpy irish again
Road Warrior
Joined: Nov 2005
Posts: 1,942
Likes: 2
From: LAKESIDE CA.
Default RE: syn3

read several articals on oil and most said mobil 1 was the best
I have been running it for the last 24 thou. and love it only change every
10 thou change filters at no more than 5 thou intervals.
dealer suggestion...
I use reg dino oil in the primary from what I read syn might cause a slip
so just don't take the chance
mobil 1 in tran works great and shifts quit and smooth

[IMG]local://upfiles/5757/5BBCBCAB816845509176FB0461AB7DA6.jpg[/IMG]
 
Old Aug 24, 2006 | 06:35 PM
  #15  
pittguy's Avatar
pittguy
Outstanding HDF Member
Joined: Jul 2006
Posts: 2,303
Likes: 4
From:
Default RE: syn3

Dont run the HD syn in your tranny,go heavier wt.I wouldnt recommend it esp in the new 6speeds.
 
Old Aug 24, 2006 | 06:37 PM
  #16  
monkyman's Avatar
monkyman
Outstanding HDF Member
Joined: Feb 2005
Posts: 2,925
Likes: 5
From:
Default RE: syn3

I think alot of it is personal preference.

Do the New York Yankees suck? To people in boston, yes. To people in Ny, no.

I use SYN3 in primary and in the engine, If you use Mobile1, Amsol, or what ever, it doesn't mean your engine is going to last any longer or shorter than mine.

Changing it regularly and keeping it clean from particulates is what matters. Use an oil designed for your bike and temp range, you'll be fine.
 
Old Aug 24, 2006 | 06:54 PM
  #17  
pittguy's Avatar
pittguy
Outstanding HDF Member
Joined: Jul 2006
Posts: 2,303
Likes: 4
From:
Default RE: syn3

HD will be changing the oil type for the 07 trannys.Bandaid maybe,but its a start.
 
Old Aug 24, 2006 | 07:50 PM
  #18  
Gunkholes's Avatar
Gunkholes
Road Captain
Joined: Nov 2005
Posts: 680
Likes: 1
From: Seattle area
Default RE: syn3

ORIGINAL: monkyman

I think alot of it is personal preference.

Do the New York Yankees suck? To people in boston, yes. To people in Ny, no.

Actually, only to some of the the fans in NYC is it no. Everywhere else, the answer to your question is yes! <g>
 
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Times Harley-Davidson Chucked Tradition Out the Window

 Verdad Gallardo
story-1

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-2

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-4

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-5

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-6

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-7

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-8

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-9

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
Old Aug 24, 2006 | 08:42 PM
  #19  
pococj's Avatar
pococj
Seasoned HDF Member
20 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2004
Posts: 11,068
Likes: 1,473
From: Texas! Ya mean there's someplace else?
Default RE: syn3

Syn 3 is a good enuff oil. It ain't the best. It ain't even one of the better ones. It's a Group III synthetic, and is not a synthetic blend. A Group III synthetic is actually made from a dino oil base stock.

Worst thing about it is that it is made by Citgo, a wholly owned subsidiary of the state-owned oil company of Venezuela. Why would you want to support that socialist outfit?
 
Old Aug 24, 2006 | 09:57 PM
  #20  
1flhtk4me's Avatar
1flhtk4me
Seasoned HDF Member
15 Year Member
Joined: Apr 2006
Posts: 10,675
Likes: 95
From: Billings,Mt.
Default RE: syn3

Not to defend the Syn 3,but what makes it so bad for the motor?I know that the cost is one issue and not to mention the **** you can get from a dealer from using other than HD 360 or Syn 3.
I know Amsoil has their report,but has anyone run syns(in their own use) long enough to really tell?Have you torn engines apart to compare oils?
This debate goes on and on like the Energizer battery!
 



All times are GMT -5. The time now is 06:13 PM.

story-0
7 Times Harley-Davidson Chucked Tradition Out the Window

Slideshow: Harley-Davidson built its reputation on nostalgia, but every so often, the company took a hard left turn into the future.

By Verdad Gallardo | 2026-05-20 11:18:19


VIEW MORE
story-1
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-2
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-3
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-4
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-5
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-6
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-7
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-8
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-9
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE