What motor oil can you use in your Buell Ulysses?

Answer 1

Best bet is a good synthetic xxW50 grade such as Mobil-1 15W50.

Per the Buell XBike owners manual...

Recommended Engine Oils

H-D TYPE

VISCOSITY

H-D RATING

LOWEST AMBIENT TEMPERATURE

COLD WEATHER STARTS BELOW 50° F (10° C)

H-D Multi-grade

SAE 10W40

HD 360

Below 40° F 4° C

Excellent

H-D Multi-grade

SAE 20W50

HD 360

Above 40° F 4° C

Good

H-D Regular Heavy

SAE 50

HD 360

Above 60° F 16° C

Poor

H-D Extra Heavy

SAE 60

HD 360

Above 80° F 27° C

Poor

Engine oil is a major factor in the performance and service life of the engine. Always use the proper grade of oil for the lowest temperature expected before the next scheduled oil change. Refer to Recommended Engine Oils. Your authorized dealer has the proper oil to suit your requirements.

If it is necessary to add oil and Harley-Davidson oil is not available, use an oil certified for diesel engines. Acceptable diesel engine oil designations include: CF-4, CG-4, CH-4 and CI-4.

The preferred viscosities for the conventional diesel engine oils in descending order are: 20W50, 15W50, 15W40 and 10W40.