Motorcycle Maintenance and Oil Information for 1999 Triumph Thunderbird 900
When preparing an oil change for the 1999 Triumph Thunderbird 900, review the engine’s oil requirements and its recommended level-check method. The answers below identify what this catalog actually lists for the motorcycle.
What type of engine oil does a 1999 Triumph Thunderbird 900 need?
According to the matched catalog records, the engine-oil grade is 10W-40. The matching product listing includes 10W-40 Synthetic Metric Motorcycle Oil. Viscosity alone does not establish full compatibility; verify the manufacturer’s oil standard.
What oil filter does a 1999 Triumph Thunderbird 900 need?
The oil-filter part numbers listed for this vehicle include 24941-EA.
