Oil and Oil Related Topics A place to post your oil related questions and comments.
Sponsored by:
Sponsored by:

Mobil 1 primary/gear

Old 02-13-2019, 08:38 AM
470004's Avatar
470004 is online now
Outstanding HDF Member
Join Date: Feb 2013
Location: New York
Posts: 3,053
Received 317 Likes on 283 Posts

The following users liked this post:
lightweight bob (02-18-2019)
Old 02-15-2019, 01:23 AM
2018 lowrider M8's Avatar
2018 lowrider M8
2018 lowrider M8 is offline
One Of The Regulars
Join Date: Jul 2018
Location: Queensland,Australia
Posts: 169
Received 23 Likes on 21 Posts

Originally Posted by 47000412 View Post
Nice stuff this
The following users liked this post:
lightweight bob (02-18-2019)
Old 02-15-2019, 07:39 AM
86glider's Avatar
86glider is offline
Senior Rider
Join Date: Apr 2016
Location: Long Island
Posts: 339
Received 59 Likes on 54 Posts

I use B&M trick shift tranny fluid in my primary, works great.
Old 02-16-2019, 08:30 AM
1340hog's Avatar
1340hog is offline
Senior Rider
Join Date: Dec 2013
Location: farmington ny
Posts: 420
Received 43 Likes on 42 Posts

I use mobile 1, 4t 10-40 racing in my primary. Never have any metal on drain plug, never a clutch slip. Been using this stuff for years in several different bikes with out any issues.
Old 02-16-2019, 09:12 AM
rivertrash's Avatar
rivertrash is offline
New Member
Join Date: May 2018
Location: Del Rio, TX
Posts: 16
Likes: 0
Received 1 Like on 1 Post

I saw Bel Ray transmission oil mentioned above and thought I would throw my two cents in. I did an ape hanger mod to my 2010 HD Road King Classic last year from Hill Country Cycles, TX. Included in the handle bar change out I upgraded to a new stainless, braided clutch cable. HCC included a bottle of the Bel Ray trani oil for the swap. What a huge difference it made to the performance and sound of the bike. Very smooth, very quite after the change. I probably would have never tried it otherwise but I’m a believer now.
Old 02-17-2019, 05:54 AM
wagsrk08 is offline
Road Captain
Join Date: Feb 2008
Location: On the lake, Ohio
Posts: 559
Received 13 Likes on 12 Posts

Originally Posted by Jmc543 View Post
Mobil 1 in the primary. Anyone doing this?
I used Mobil 1 20W-50 V-Twin Fully Synthetic engine oil in my 2008 FLHR primary for over 48,000 miles (8 years) with no issues until I went with a Stage 2 up-grade. Then switched to Spectro Primary fluid. Now only use Spectro products in primary & transmission (6-speed Platinum 75W-140).
Old 02-18-2019, 12:11 PM
hardheaded is offline
Ultimate HDF Member
Join Date: Oct 2012
Location: St.Louis Mo.
Posts: 7,513
Received 576 Likes on 456 Posts

I've been using Mobil V-Twin 20-50 in my engine and primary for many years with no problems. Redline heavy shockproof in trans. My new tri-glide i stuck with F+ in the primary,, no real reason.
Old 07-13-2019, 09:11 AM
B Bop's Avatar
B Bop
B Bop is offline
Road Captain
Join Date: Feb 2013
Location: Harleysville, PA
Posts: 568
Received 42 Likes on 36 Posts

Just did clutch kit, ALTO Carbonite, lifetime warranty this kit included extra fiber plate and steel plate. Increased spring pressure adding Harley Police spring "pink dot" this spring provided 19% more pressure than stock "yellow dot". After many searches, reviews & testimonies selected Mobil 1 Synthetic ATF in primary.

The primary runs quiet, cooler by 42 degrees ambient temperature (morning 76, late afternoon 93 degrees, shifting is smoother, can feel clutch grab 30% more, and finding Neutral is spot on every time.

Little over 500 miles 35% city traffic 65% country mountains tight turns and I'm very content. Will report back after 25k on clutch to give more accurate assessment.

B Bop

2012 FLHR (Road King) Stage II Red Ember Sunglo/Merlo Sunglo, Original HD Chrome Laced Profile Aluminum Spoke Tubeless Rims, ABS, Cruise Control, Security Package, Saddlebag LED Spoiler lights, and array of nostalgic & performance accessories that enhances appearance & blood curdling performance.

Last edited by B Bop; 07-13-2019 at 09:18 AM.
Old 07-13-2019, 09:32 AM
RIPSAW's Avatar
RIPSAW is offline
Big Kahuna HDF Member
Join Date: Mar 2010
Location: Bates Motel, Fairville U.S.A.
Posts: 20,002
Received 746 Likes on 643 Posts

The engineers say do not use High detergent in a non-filtered box. If you go the recommended maintenance schedule, you want the junk to settle to the nooks and crannies in the bottom.

Even Harley went back to the first choice to a non-detergent without EP additives for transmission and transmission.

Probably really does not matter unless you really plan on wearing it out with a whole lot of a bike being your main driver and not a hobby. Few due.
Old 07-16-2019, 05:57 PM
71on72 is offline
Join Date: Dec 2014
Location: San Diego
Posts: 6,823
Received 2,544 Likes on 1,603 Posts

This in the primary. Used in motocross bikes for years. Safe for wet clutches.

Thread Tools
Search this Thread

Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: