Harley-Davidson Mineral Oil Service
Service provided by Motorhelmets in Fullerton, CA - N. Orange County.
Technical Overview
Complete drivetrain fluid service using premium mineral lubricants — commonly referred to in Harley-Davidson culture and mechanic circles as a '3-hole service' (or three-hole service). This comprehensive service drains and replaces all three distinct powertrain fluids: engine crankcase oil, primary chaincase fluid, and transmission gear lubricant, paired with a brand-new spin-on oil filter and fresh drain plug O-rings.
Why This Service Matters
Harley-Davidson Big Twin (Twin Cam, Evolution, Milwaukee-Eight) and Sportster powertrains isolate engine oil, primary chain lubrication, and transmission gearing into three separate fluid cavities (the classic '3-hole' configuration). Each cavity demands a purpose-formulated lubricant: motor oil for internal combustion heat, wet-clutch compatible fluid for the primary drive without clutch slip, and high-pressure shear-resistant gear lube for the 5-speed or 6-speed transmission gears.
What's Included in This Appointment
- Comprehensive 3-hole fluid overhaul: Engine, Primary, and Transmission cavities
- Engine oil dump with brand-new spin-on oil filter
- Primary chaincase fluid change with fresh inspection
- Transmission gear oil drain and refill with heavy-duty gear lube
- Magnetic drain plugs inspected and cleaned for ferrous debris
- Fresh drain plug O-rings installed and torqued to factory manual spec
- Multi-point chassis, tire pressure and belt tension check
Service Bay Specifications
Book Harley Mineral Oil Service
Estimated service duration: 120 Min (2 Hours) ($250.00). Select your drop-off or waiting slot and receive instant digital confirmation via SMS and email.
WowShopper Motorsports Service Bay
Service provided by Motorhelmets
Located right off the 91 freeway on Commonwealth Ave in Fullerton. Our facility features a dedicated service bay, tire mounting stations, high-speed spin balancers, and full parts showroom.