07 sportster chain/transmission lube
#1
#5
RE: 07 sportster chain/transmission lube
ORIGINAL: cHarley
Same here Mobil 1 75-90 syn gear oil. It's spproved for the trans/primary. Gear shifts are quieter since I changerd from 20w-50.
Same here Mobil 1 75-90 syn gear oil. It's spproved for the trans/primary. Gear shifts are quieter since I changerd from 20w-50.
#6
RE: 07 sportster chain/transmission lube
ORIGINAL: ssls6
Who approved it for the trans/primary? My fear is around the wet clutch. How many miles have you been using it?
ORIGINAL: cHarley
Same here Mobil 1 75-90 syn gear oil. It's spproved for the trans/primary. Gear shifts are quieter since I changerd from 20w-50.
Same here Mobil 1 75-90 syn gear oil. It's spproved for the trans/primary. Gear shifts are quieter since I changerd from 20w-50.
#7
RE: 07 sportster chain/transmission lube
I know the big twins use gear lube in the tranny but they don't use gear lube in the primary. What I don't understand is if gear lube is OK for the sportster's combo primary/tranny box. Many gear lubes have high concentrations of antifriction additives like Moly or Boron which can cause slip in the clutch (leading to premature clutch wearout). Some clutch materials don't care (like those found in eaton type differentials) and some do.
My owners manual only says to use HD formula+ primary and transmission lube. I'm glad you're having success with Mobil 1 75w-90...that gives me hope.
My owners manual only says to use HD formula+ primary and transmission lube. I'm glad you're having success with Mobil 1 75w-90...that gives me hope.
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#10
RE: 07 sportster chain/transmission lube
There are dozens of previous posts on this forum about oils. Mobile 1 GL-5 works great in the sporty primary/trans. If you want to run Citgo oil then by all means buy HD brand oil. If you really want to read up on the subject I suggest tryingthe Search button at the top of the page and query oil, synthetic, oil primary, etc. I don't at all mean to sound rude, but there is tons of information already here if you search for it.