what is the BEST oils for H-D
#11
03-28-2008, 09:09 AM
RE: what is the BEST oils for H-D
I have done a bunch of research on this and my conclusions are as follows:
Engine - AMSOil Synthetic Motorcycle Oil 20W50 - this appears to be one of the best synthetics you can find. Synthetics will withstand hotter temperatures and allow for longer use before breaking down. You also usually have a much broader viscosity range allowing for the fluid to be thinner when cold and thicker when hot than conventional oils.
Trans - AMSOil Sever Gear 75W90 or any heaver gear oil - will smooth out shifting, and be better suited for the conditions of the gears.
Primary - Harley FORMULA+ - several people have recommended that I not run synthetic due to my higher torque engine build and clutch, you need lubrication but don't want the extra slipperiness generally provided by synthetics.
Engine Break-in, initially or after engine work, use standard HD oil. You don't want your cylinders too slippery during breaking so you don't get glazing. Metal needs to wear down for everything to mate up.
I am currently in "break-in" stage, after another 100-150 miles this spring, I will switch all three holes to the above mentioned mix and then dyno... but that's another post.
Engine - AMSOil Synthetic Motorcycle Oil 20W50 - this appears to be one of the best synthetics you can find. Synthetics will withstand hotter temperatures and allow for longer use before breaking down. You also usually have a much broader viscosity range allowing for the fluid to be thinner when cold and thicker when hot than conventional oils.
Trans - AMSOil Sever Gear 75W90 or any heaver gear oil - will smooth out shifting, and be better suited for the conditions of the gears.
Primary - Harley FORMULA+ - several people have recommended that I not run synthetic due to my higher torque engine build and clutch, you need lubrication but don't want the extra slipperiness generally provided by synthetics.
Engine Break-in, initially or after engine work, use standard HD oil. You don't want your cylinders too slippery during breaking so you don't get glazing. Metal needs to wear down for everything to mate up.
I am currently in "break-in" stage, after another 100-150 miles this spring, I will switch all three holes to the above mentioned mix and then dyno... but that's another post.
#12
03-28-2008, 09:21 AM
#13
03-28-2008, 09:35 AM
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RE: what is the BEST oils for H-D
I honestly don't know whats the best...I do know that I have used Amsoil in the last three bikes that I've owned; Using 20-50 for the motor, 10-40 Primary and Sever Gear in Tranny......and I've never had an oil related problem. So in my head I think I am using the best. Of course there will be others on here that sware by what they use.
#14
03-28-2008, 01:01 PM
Outstanding HDF Member
#15
03-28-2008, 01:11 PM
RE: what is the BEST oils for H-D
engine: Mobil1Vtwin20w50
trans: Redline SHockproof Heavy
primary: Redline MTL
Go to the oil threads and start reading and report back next year when you are done....
FWIW: Best oils IMO
Redline
Amsoil
Mobil1
Royal Purple
Spectro
HDSyn3 as a last resort.
Just use a 75w90 gear oil in your trans.
trans: Redline SHockproof Heavy
primary: Redline MTL
Go to the oil threads and start reading and report back next year when you are done....
FWIW: Best oils IMO
Redline
Amsoil
Mobil1
Royal Purple
Spectro
HDSyn3 as a last resort.
Just use a 75w90 gear oil in your trans.
#16
03-28-2008, 01:28 PM
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#17
03-28-2008, 01:32 PM
#19
03-28-2008, 01:42 PM
