The 2018 Harley-Davidson FLHX Street Glide features Engine: Milwaukee-Eight 107 V-Twin, Fuel Capacity: 6.0 gal. Owner note: Interval is every 5,000 miles. M8 engines use a specific oil filter (63731-99) and require 3-hole oil changes (Engine, Primary, Transmission). Known concern: Oil Sumping — Often resolved by installing the 2020+ updated oil pump (H-D Part #62400247).. Learn more about this ride →
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