Dyna Glide Models Super Glide, Super Glide Sport, Super Glide Custom, Dyna Glide Convertible, Super Glide T-Sport, Dyna Glide Police, Dyna Switchback, Low Rider, Street Bob, Fat Bob and Wide Glide.
Sponsored by:
Sponsored by:

Engine CLEANING

Old Jan 9, 2026 | 05:57 PM
  #1  
snake_eyes's Avatar
snake_eyes
Thread Starter
|
Stellar HDF Member
5 Year Member
Joined: Aug 2019
Posts: 3,121
Likes: 1,906
From: Unreconstructed
Default Engine CLEANING

I'm looking for recommendations on engine cleaners, not brighteners like S100 but a chemical that will actually get the **** off my cases (see below). I'm looking at Gunk Foamy since it calls out dirt and road grime instead of grease, which is not an issue on my bike. Any personal experience or recommendations?


 
Reply
Old Jan 9, 2026 | 07:15 PM
  #2  
Ohio HD's Avatar
Ohio HD
Road Master
10 Year Member
Joined: Mar 2012
Posts: 1,020
Likes: 983
From: Ohio
Default

Simple Green and a brush. Then hose it all off under pressure.
 
Reply
Old Jan 9, 2026 | 07:33 PM
  #3  
snake_eyes's Avatar
snake_eyes
Thread Starter
|
Stellar HDF Member
5 Year Member
Joined: Aug 2019
Posts: 3,121
Likes: 1,906
From: Unreconstructed
Default

Originally Posted by Ohio HD
Simple Green and a brush. Then hose it all off under pressure.
Undiluted? Hosing is going to be a problem in the shop, in the winter, in Minnesota.
 
Reply
Old Jan 9, 2026 | 07:36 PM
  #4  
Ohio HD's Avatar
Ohio HD
Road Master
10 Year Member
Joined: Mar 2012
Posts: 1,020
Likes: 983
From: Ohio
Default

Spray bottle as it comes. Can't help that you don't have water and a heated shop available.
 
Reply
Old Jan 9, 2026 | 08:04 PM
  #5  
BMyers's Avatar
BMyers
Road Master
10 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: Mar 2012
Posts: 914
Likes: 110
From: Hardin County Iowa
Default

Shout laundry spray
 
Reply
Old Jan 9, 2026 | 11:17 PM
  #6  
snake_eyes's Avatar
snake_eyes
Thread Starter
|
Stellar HDF Member
5 Year Member
Joined: Aug 2019
Posts: 3,121
Likes: 1,906
From: Unreconstructed
Default

Originally Posted by Ohio HD
Spray bottle as it comes. Can't help that you don't have water and a heated shop available.
Shop is heated and cooled and humidity controlled, just not shooting water everywhere.
 
Reply
Old Jan 9, 2026 | 11:18 PM
  #7  
snake_eyes's Avatar
snake_eyes
Thread Starter
|
Stellar HDF Member
5 Year Member
Joined: Aug 2019
Posts: 3,121
Likes: 1,906
From: Unreconstructed
Default

Originally Posted by BMyers
Shout laundry spray
Really? That works? No grease, just road grime.
 
Reply
Old Jan 10, 2026 | 06:09 AM
  #8  
Bubba Zanetti's Avatar
Bubba Zanetti
Seasoned HDF Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Nov 2006
Posts: 21,053
Likes: 19,189
From: The Wasteland
Default

Another vote for Simple Green. Wait for a day when it’s 35-40 degrees so you can rinse it outside.
 
Reply
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 Jan 10, 2026 | 07:32 AM
  #9  
Tommy C's Avatar
Tommy C
Seasoned HDF Member
10 Year Member
Joined: Oct 2015
Posts: 13,491
Likes: 34,601
From: Pine Flat Dam/South Bay Area, CA
Default

Dilute the Simple Green 50% with water.. It will still clean very well and be easier on the bare aluminum parts and pieces.
 
Reply
Old Jan 10, 2026 | 07:59 AM
  #10  
CoolBreeze3646's Avatar
CoolBreeze3646
Seasoned HDF Member
Joined: Aug 2006
Posts: 24,497
Likes: 30,783
From: Pennsylvania
Default

And another method is steam. Good for other stuff also.


Amazon Amazon

 
Reply

Thread Tools
Search this Thread

All times are GMT -5. The time now is 04:22 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