Year: 2013
Model: XL1200C
Miles: 15000
miles on fluid:10000
Fluid used: Red Line MT-90
Stock or modified: Engine, intake, exhaust all stock
clutch type: Screamin' Eagle Performance Clutch Kit-38002-04
Performance clutch kit converts the 8-plate clutch to a 9-plate design. The surface area is increased by 13%,
and the spring rate is increased by 10% for a combination that can handle over 115 ft-lbs of torque at the crank.
Kit includes Kevlar®-based friction discs and performance clutch spring
Trans fluid history-
1000 mile service - clutch adjustment HD SYN3 used
3150 miles - new Screamin' Eagle Performance clutch installed - HD SYN3 fluid
5000 miles service - clutch adjustment Red Line MT-90 fluid (this UOA)
Blackstone Comments-
There's some extra metal and silicon here, but we're thinking that those are just residual materials
from this transmission's wear-in. The high wear is from the parts developing their tolerances, while the
silicon comes from harmless sealers used during assembly. A lot of this should wash out with this change in
fluid. Universal averages show typical wear levels for this type of Harley Davidson transmission after ~5,700
miles on the oil. The viscosity was a bit thick, but we don't think that's a problem. Check back to start
building trends.
My comments-
I haven't found very many Harley Sportster transmission/Primary UOAs. Another Forum lists a couple.
The Red Line MT-90 should have a 100 C viscosity of 15.6 cSt. So it didn't thicken, it sheared just a little.
I'm not sure if Blackstone was thinking it was Mt-85, 12.0 cST, or MTL, 10.4 cSt.
The dealer did use a little silicone on the clutch inspection cover gasket when the clutch was installed.
Maybe they also used some on the Primary cover, I haven't taken it off.
This run was started with about 2000 miles on the new clutch so a little more iron from the new steel plates wouldn't be unusual.
I ended up with about the the universal averages for iron with almost twice the miles.
Code:
2013 XL1200C
Total miles 15000
Miles on oil 10000
Date 3/26/2016
Oil Brand Red Line
Type MT-90
Universal averages
ALUMINUM 82 9
CHROMIUM 0 1
IRON 58 51
COPPER 21 6
LEAD 2 1
TIN 0 1
MOLYBDENUM 16 189
NICKEL 1 0
MANGANESE 1 1
SILVER 0 0
TITANIUM 0 0
POTASSIUM 2 5
BORON 137 160
SILICON 49 18
SODIUM 2 8
CALCIUM 2922 2458
MAGNESIUM 109 121
PHOSPHORUS 1953 1086
ZINC 2199 500
BARIUM 0 0
SUS @ 210F 77.2
cSt Viscosity @ 100C 14.83
Flashpoint F 440
Fuel %
Antifreeze %
Water % 0.0
Insolubles % TR
TBN N/A
TAN N/A