Which oil? 2007 Nightster..bored out
#2
05-04-2018, 04:55 PM
HDF Community Team
Pandora's Box is actually full of all the brands of oil used with Sportsters.
Get ready! You just opened it!!
I use Castrol GTX 20W50 with a Wix 51215 filter for the engine. Currently have Bel Ray Sport Transmission Lube for the gearbox/primary case.
John
Get ready! You just opened it!!
I use Castrol GTX 20W50 with a Wix 51215 filter for the engine. Currently have Bel Ray Sport Transmission Lube for the gearbox/primary case.
John
Last edited by John Harper; 05-04-2018 at 04:59 PM.
#3
05-04-2018, 05:14 PM
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#4
05-04-2018, 05:55 PM
Cruiser
#6
05-05-2018, 12:10 AM
There are 138 pages of oil questions in the "oil-and-oil-related-topics" section 
https://www.hdforums.com/forum/oil-a...ted-topics-30/
Here is the poll on oil use:
https://www.hdforums.com/forum/oil-a...your-bike.html
~60% use Mobil 1 or Amsoil
26% use HD oil, conventional or SYN3
Primary/Transmission oil poll-
https://www.hdforums.com/forum/oil-a...ur-choice.html
Should you use gear oil in the Sportster Primary/transmission?
https://www.hdforums.com/forum/sport...-answered.html
https://www.hdforums.com/forum/oil-a...ted-topics-30/
Here is the poll on oil use:
https://www.hdforums.com/forum/oil-a...your-bike.html
~60% use Mobil 1 or Amsoil
26% use HD oil, conventional or SYN3
Primary/Transmission oil poll-
https://www.hdforums.com/forum/oil-a...ur-choice.html
Should you use gear oil in the Sportster Primary/transmission?
GL5 Gear Oil - Is It Safe To Use In the Sporty? - ANSWERED
https://www.hdforums.com/forum/sport...-answered.html
#7
05-05-2018, 08:32 AM
Stellar HDF Member
Endless debate.
Customized bored out engine?
Head work, cams & valve springs too?
Nothing wrong with Harley synthetic oil.
Especially short rides, little use, annual oil change only.
Many like other brands, the endless debate.
Nothing wrong with OEM oil filters.
Harley has chrome or black filter color options.
Many like MOBIL, K&N & other brands.
As for oil weight...to many variable.
OEM spec is 20/50.
I agree, Harley's Formula Plus oil in trans.
FWIW I use Harley regular 20/50 w/ Harley filter & Formula + in my stock 07 1200N.
Customized bored out engine?
Head work, cams & valve springs too?
Nothing wrong with Harley synthetic oil.
Especially short rides, little use, annual oil change only.
Many like other brands, the endless debate.
Nothing wrong with OEM oil filters.
Harley has chrome or black filter color options.
Many like MOBIL, K&N & other brands.
As for oil weight...to many variable.
OEM spec is 20/50.
I agree, Harley's Formula Plus oil in trans.
FWIW I use Harley regular 20/50 w/ Harley filter & Formula + in my stock 07 1200N.
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