Originally Posted by ogh11756
I bought my Sportster (see sig) used last fall and have changed engine oil twice with no problems. Last night i decided to also change the oil in the gearbox too.
I drained it and put in 1 quart of Mobil 1 75W-90 gear lube, it now makes a lot more noise than before (used to be whisper quiet) and shifting is not as smooth as before. I do not like it one bit.
The oil i drained out of the gearbox had that sulfur gear oil smell to it so i can only assume it was gear oil but not Mobil 1. I am also assuming that at 7,800 miles it had not been changed previously unless that's part of the 5k service.
What gear lube does HD use at the factory & when servicing?
Do you think switching to HD formula+ will get me back to quiet & smooth?
It Made Mine super quiet and smooth,,
It's what Is reccomended by HD,,
It's made for our tranny n clutch,,
I change It every 5,000,,,
The factory Installed oil needed to be changed at 5k so I did,,,
Why the hell would I wanna run any synthetic ? I'm not gonna leave
It In for 10,000 anyways.
GL-5 Based Lubricants IMO from my research can deteriorate certain
materials in the Stator over time,,,long time Im shure,,But why risk It.
And no I'm not gonna reserach all that again,,too time consuming.
Most will not agree with me anyways and thats fine.
Synthetics In the primary are too slippery IMO
I tried an old well known product from Bel-Ray,,said on the bottle,
made for sportsters,,,75 miles later It was OUT,,DRAINED,,
I was not gonna run with my gears n clutch shifting like crap.
IMO The Bel-Ray sportster tranny fluid would have destroyed my tranny
In short order..
HD formula+ Is In there now and I will never run anything else,,,
Thats my story an I'm stickin to it,,,,
Most think the "Clunk" In a sportster tranny Is normal,,,thats fine with me
But mine don't "Clunk" all the time anymore an I'm happy...
The first morning drop into 1st gear sometimes does "Clunk" BUt not as bad and not all the time.
My advice,,,TRY the "HD Formula +",, Go On,,I dare ya XD