S&S Cycle Big Bore Kits 97 & 106 for 1999–06 & 2007–Up Big Twins - Manual (Page 5)

5
Viscosity Ambient Temperature (°F)
SAE 20W50
Normal Operating Conditions
30°–100°
SAE 10W40 Consistantly Below 40°
SAE 60 Consistently Above 80°
7- For the balance of the first 1000 miles the engine can be run in
a normal but conservative manner. You can be more liberal with
the rpm range and the motorcycle can be operated at normal
highway speeds. Avoid overheating or putting any hard strain
on the engine; no drag racing, dyno runs, excessive speed, trailer
towing or side car operation.
8- After 1000 miles, change the engine oil. Now the motorcycle can
be operated normally.
OIL RECOMMENDATIONS
S&S® Cycle recommends the use of S&S 20W-50 synthetic or petroleum
based V-Twin Motor Oil.
Break-in can be performed with either synthetic or petroleum based oil.
Regardless of what type of oil you select, be sure to only use oil specifically
designated for use in an air cooled motorcycle engine. If you prefer
not to use a multi-viscosity oil, utilize the viscosity suggested for the
temperature you will be operating your motorcycle in.