Honda GL1800 Gold Wing Tour DCT (SC79) — OEM Fluid, Tire Pressure & Maintenance Specs
1,833cc Liquid-Cooled Flat-Six Unicam SOHC 24-Valve + 7-Speed Wet DCT with Walking Mode · Source: Honda GL1800 Gold Wing Tour DCT (SC79) Official Owner’s Manual Maintenance Specifications
According to the Honda GL1800 Gold Wing Tour DCT (SC79) Official Owner’s Manual Maintenance Specifications, the 2018–Present Honda GL1800 Gold Wing Tour DCT (SC79) (chassis SC79/GL1800D/GL1800DA) requires 4.4 L (4.65 US qt) of SAE 10W-30 (JASO MA, API SG or higher (JASO MA Mandatory — NO Energy Conserving)) engine oil for a drain-only change and 4.6 L (4.86 US qt) with filter service (Engine: 15410-MFJ-D01 (HF204) + DCT Clutch Filter: 15412-MGS-D21 (HF117)). Standard solo cold tire pressure is 250 kPa / 2.50 bar / 36 PSI front (130/70R18 M/C 63H) and 280 kPa / 2.80 bar / 41 PSI rear (200/55R16 M/C 77H), paired with 6× NGK CR6HSB-9 spark plug(s) and a GYZ20L / YTX20L-BS battery.
Drain only: 4.4 L (4.65 US qt)
R 280 kPa (2.80 bar)
Est. Range: ~384 km (239 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Wet Multi-Plate Dual Clutch (DCT) NEVER use JASO MB |
|---|---|
| Recommended Viscosity & Grade | SAE 10W-30 (Alt: SAE 10W-40) · JASO MA · API SG or higher (JASO MA Mandatory — NO Energy Conserving) |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 4.4 L (4.65 US qt) • With filter/strainer: 4.6 L (4.86 US qt) • Complete dry overhaul: 5.6 L (5.92 US qt) |
| OEM Oil Filter Code & Type | Engine: 15410-MFJ-D01 (HF204) + DCT Clutch Filter: 15412-MGS-D21 (HF117) |
| Correct Oil Level Check Method | Hold upright on level ground; rest dipstick UNTHREADED on filler neck (do NOT screw in) |
| Oil Drain Bolt Torque | 30 N·m (22.1 lb-ft / 3.06 kgf·m) — Use fresh crush washer |
| Final Drive / Bevel Gear Oil | 140 ml (0.14 L) — SAE 80 Hypoid Gear Oil API GL-5 (140 ml drain / 160 ml disassembly) |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 130/70R18 M/C 63H · Rear: 200/55R16 M/C 77H (Tubeless) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 250 kPa / 2.50 bar / 36 PSI Rear: 280 kPa / 2.80 bar / 41 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 250 kPa / 2.50 bar / 36 PSI Rear: 280 kPa / 2.80 bar / 41 PSI |
| OEM Spark Plug & Quantity | NGK CR6HSB-9 × 6 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | GYZ20L / YTX20L-BS (12V 20.0Ah Heavy-Duty AGM) |
| Final Drive Maintenance | Single-Sided Pro-Arm Shaft Drive — Replace 140 ml SAE 80 Hypoid Gear Oil every 36,000 km |
| Brake Fluid & Coolant | DOT 4 · Pro Honda HP Silicate-Free Premixed Coolant (~2.9 L across dual side radiators) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 1833 cc · 126.4 hp @ 5,500 rpm · 170 N·m (125.4 lb-ft) @ 4,500 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 745 mm (29.3 in) · 385 kg (849 lbs) |
| Fuel Tank & Est. Real-World Range | 21.1 L (5.6 US gal) · ~18.2 km/L → ~384 km (239 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 12,000 km / 24,000 km • Air Filter / Spark Plug: 24,000 km / 24,000 km • Valve Clearance Check: 36,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Redesigned from the ground up in 2018 (SC79) with a double-wishbone front end, 24-valve Unicam flat-six, and 7-speed DCT (plus a larger 61 L Tour trunk from 2021+), SC79 differs completely in oil volume and six NGK CR6HSB-9 plugs from 2001–2017 SC47/SC68 models.
Oil & Clutch Mechanical Engineering Note
One shared sump lubricates the 1,833cc flat-six and actuates the 7-speed wet DCT plus low-speed Walking Mode; strictly use non-energy-conserving SAE 10W-30 JASO MA oil (4.6 L with both engine spin-on and DCT paper filters on DCT trims).
Garage Wrenching Gotchas
- Swapping the air filter on an SC79 Gold Wing requires extensive upper shelter and cockpit panel disassembly—bundle air filter replacement with major 24,000–36,000 km service items.
- Supporting ~385 kg wet mass, the load-rated 130/70R18 and 200/55R16 tires house factory TPMS sensors—protect the sensor stems on tire machines and maintain 250 kPa (36 PSI) front / 280 kPa (41 PSI) rear cold.
5. Frequently Asked Questions (FAQ)
What are the engine oil and final-drive shaft oil capacities on the Gold Wing DCT?
Engine oil refill is 4.4 L drain-only or 4.6 L (4.9 US qt) with both engine and DCT filters, while the rear shaft final drive takes 140 ml of SAE 80 API GL-5 hypoid gear oil.
Can you replace all six spark plugs on an SC79 Gold Wing without pulling the engine?
Yes—because the flat-six cylinder heads project horizontally on each side, popping off the lower valve-head side covers gives direct wrench access to all six NGK CR6HSB-9 spark plugs.
How do Gold Wing Tour DCT riders reverse a 385 kg touring bike on slopes?
SC79 DCT trims feature engine-driven Walking Mode controlled from left handlebar paddles, creeping forward at ~1.8 km/h and backward at ~1.2 km/h effortlessly.