Harley-Davidson Street Glide (2018-2024 (M8)) Maintenance Schedule & Specs
Harley-Davidson Street Glide (2018-2024 (M8)) (2018-2024): engine oil 20W-50 (HD Screamin) every ~5,000 miles, tires 130/60B21 at 40 psi cold, battery group YTX20L-BS. Engine: 107ci Milwaukee-Eight V-Twin (Street Glide). Full interval table below, with source and date.
Factory service intervals — Harley-Davidson Street Glide (2018-2024 (M8))
| Service | Interval |
|---|---|
| Oil & filter change | every ~5,000 miles |
| Spark plugs | every ~10,000 miles |
| Engine air filter | every ~10,000 miles |
| Engine coolant | every ~0 miles |
| Brake fluid | every ~20,000 miles |
Tires & battery
- Tire size: 130/60B21 at 40 psi cold — always confirm the driver-door placard.
- Battery: group YTX20L-BS, 310 CCA.
- Drivetrain: RWD · Fuel: gas
Known problem areas of this generation
- Hydraulic clutch service
- Infotainment (BOOM!) updates
- Exhaust heat
- Accessory electrical load
See owner-reported problems by component for the failure-mileage data behind these patterns, or look up a check-engine code if a warning light is already on.
Severe service shortens every interval
Frequent short trips, towing, mountain driving, sustained idling or dusty conditions are "severe service" for every manufacturer: cut the oil interval roughly in half and inspect filters more often. The table above reflects normal service — your owner's manual has the severe-service column and is the authority for your vehicle.
Source: VinSpecs editorial reference for US-market vehicles, compiled from manufacturer service schedules (dataset us-vehicles-specs-and-maintenance-2026, generated 2026-11-14). Verify intervals against your owner's manual. Prices/exclusions: MSRP fields excluded from the source for quality reasons. This page is general information, not a substitute for factory service documentation.
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