Vespa GTS 300 Super / SuperSport (Quasar) — OEM Fluid, Tire Pressure & Maintenance Specs
278cc Liquid-Cooled Single SOHC 4-Valve QUASAR · Source: Vespa GTS 300 Super / SuperSport (Quasar) (2008–2018) Official Owner’s Manual Maintenance Specifications
According to the Vespa GTS 300 Super / SuperSport (Quasar) (2008–2018) Official Owner’s Manual Maintenance Specifications, the 2008–2018 Vespa GTS 300 Super / SuperSport (Quasar) (chassis ZAPM45200/ZAPMA3300) requires 1.15 L (1.22 US qt) of SAE 5W-40 (JASO MA2, API SL / ACEA A3 Full Synthetic 5W-40) engine oil for a drain-only change and 1.3 L (1.37 US qt) with filter service (Piaggio 82635R / HF183). Standard solo cold tire pressure is 180 kPa / 1.80 bar / 26 PSI front (120/70-12 51P) and 200 kPa / 2.00 bar / 29 PSI rear (130/70-12 62P), paired with 1× NGK CR8EB spark plug(s) and a YTX12-BS battery.
Drain only: 1.15 L (1.22 US qt)
R 200 kPa (2.00 bar)
Est. Range: ~257 km (160 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Dry Centrifugal CVT Belt Drive |
|---|---|
| Recommended Viscosity & Grade | SAE 5W-40 · JASO MA2 · API SL / ACEA A3 Full Synthetic 5W-40 |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 1.15 L (1.22 US qt) • With filter/strainer: 1.3 L (1.37 US qt) • Complete dry overhaul: 1.5 L (1.59 US qt) |
| OEM Oil Filter Code & Type | Piaggio 82635R / HF183 |
| Correct Oil Level Check Method | Upright on level ground; screw dipstick ALL THE WAY IN, then remove to read level |
| Oil Drain Bolt Torque | 24 N·m (17.7 lb-ft / 2.45 kgf·m) — Use fresh crush washer |
| Final Drive / Bevel Gear Oil | 250 ml (0.25 L) — SAE 80W-90 GL-4/GL-5 (200–270 ml rear hub gear oil) |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 120/70-12 51P · Rear: 130/70-12 62P (Tubeless) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 180 kPa / 1.80 bar / 26 PSI Rear: 200 kPa / 2.00 bar / 29 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 200 kPa / 2.00 bar / 29 PSI Rear: 230 kPa / 2.30 bar / 33 PSI |
| OEM Spark Plug & Quantity | NGK CR8EB × 1 (Gap: 0.7–0.8 mm) |
| OEM Battery Code & Rating | YTX12-BS (12V 10.0Ah MF AGM) |
| Final Drive Maintenance | Dry Centrifugal V-Belt CVT — Inspect/replace V-belt and rollers every 15,000–20,000 km |
| Brake Fluid & Coolant | DOT 4 · OAT ethylene-glycol coolant for aluminum radiators (50:50 premix) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 278 cc · 21.2 hp @ 7,500 rpm · 22.3 N·m (16.4 lb-ft) @ 5,000 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 790 mm (31.1 in) · 158 kg (348 lbs) |
| Fuel Tank & Est. Real-World Range | 9 L (2.4 US gal) · ~28.5 km/L → ~257 km (160 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 10,000 km / 10,000 km • Air Filter / Spark Plug: 10,000 km / 10,000 km • Valve Clearance Check: 20,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Powered by the pre-HPE 21.2 hp QUASAR 278cc single (2008–2018), with a major 2014 mid-cycle update introducing ESS front pivot geometry plus optional dual-channel ABS and ASR.
Oil & Clutch Mechanical Engineering Note
Inspect drained SAE 5W-40 oil closely on high-mileage QUASAR 278 engines—milky emulsification indicates a weeping mechanical water-pump seal on the stator cover.
Garage Wrenching Gotchas
- Pre-HPE QUASAR 300 heads take an NGK CR8EB (10 mm thread) spark plug rather than the HPE’s 8 mm MR7BI-8 iridium plug—always verify engine code before ordering.
- Cold-idle stalling on high-mile MIU throttle bodies usually stems from air-bleed carbon buildup; clean gently with throttle-safe spray without scraping the butterfly coating.
5. Frequently Asked Questions (FAQ)
What are the engine oil and rear hub gear oil capacities for the Vespa GTS 300 Super / SuperSport (Quasar) scooter?
With an isolated dry CVT belt case, the engine requires 1.15 L drain-only or 1.3 L (1.37 US qt) with filter/screen (Piaggio 82635R / HF183) of SAE 5W-40 (JASO MA2). Service the rear reduction hub separately (final drive 250 ml).
How do you accurately check the oil level on the GTS 300 Super / SuperSport (Quasar), and what are its service intervals?
After warming the engine and waiting per manual procedure, thread the dipstick all the way in before removing it to read the oil level (resting it unscrewed causes overfilling). Torque the drain plug to 24 N·m with a new crush washer. Factory oil change intervals are every 10,000 km, with valve clearance inspection every 20,000 km.
What are the cold tire pressures, puncture repair type, seat height, and range of the GTS 300 Super / SuperSport (Quasar)?
Fitted with 120/70-12 51P front and 130/70-12 62P rear tubeless rims (compatible with roadside plug kits), set cold tire pressures to 26 / 29 PSI (180/200 kPa) solo or 29 / 33 PSI loaded. Seat height is 790 mm (31.1 in) at 158 kg wet weight, delivering ~257 km per 9 L tank.