Quick Answer
The best engine oil for Hero Splendor Plus, HF Deluxe, Glamour 125, and Super Splendor is 10W-30 JASO MA2. Hero officially specifies 10W-30 for all 100cc–125cc commuter models. For Hero Xtreme 160R and Xpulse 200, use 10W-40 JASO MA2. Avoid using 20W-40 or thicker grades in BS6 Hero commuters — it increases fuel consumption by 3–5% without any protection benefit. Change interval: every 4,000–5,000 km.
Hero Motorcycle Engine Oil: The 100cc–160cc Commuter Guide
Hero MotoCorp is India's largest two-wheeler manufacturer, with the Splendor alone accounting for over 30 million units sold. The Splendor, HF Deluxe, Passion Pro, Glamour, and Super Splendor all share a common engineering philosophy: lightweight, fuel-efficient, low-maintenance commuter engines optimised for 30,000–80,000 km of urban Indian use. Hero's official engine oil specification for virtually every commuter model in the 100cc–125cc range is 10W-30 JASO MA2, with the 160cc segment (Xtreme, Xpulse 160) typically specifying 10W-40 JASO MA2. Using the correct grade is essential — Hero's engines are calibrated for specific oil viscosity, and deviation increases fuel consumption and reduces service life.
Hero Model-by-Model Oil Specification
| Model | Engine | OEM Grade | Carbo Oil Recommendation |
|---|---|---|---|
| HF Deluxe / HF 100 | 97.2cc BS6 | 10W-30 JASO MA2 | SUPER-FS 10W30 API SN |
| Splendor Plus / Splendor+ | 97.2cc BS6 | 10W-30 JASO MA2 | 01 GT 10W30 API SP |
| Super Splendor | 124.7cc BS6 | 10W-30 JASO MA2 | 01 GT 10W30 API SP |
| Glamour 125 | 124.7cc BS6 | 10W-30 JASO MA2 | 01 GT 10W30 API SP |
| Passion Pro / Passion XPro | 113.2cc BS6 | 10W-30 JASO MA2 | 01 GT 10W30 API SP |
| Xtreme 160R / Xtreme 200S | 163cc / 199.6cc BS6 | 10W-40 JASO MA2 | 01 RS 10W40 API SP |
| Xpulse 200 / 200T / 4V | 199.6cc BS6 | 10W-40 JASO MA2 | 01 RS 10W40 API SP |
Why 10W-30 is Optimal for Hero 100cc–125cc Engines
Hero's commuter engines — the 97.2cc i3S unit in the Splendor and HF Deluxe, and the 124.7cc unit in the Super Splendor and Glamour — are specifically designed for fuel economy. The 10W-30 viscosity grade creates less internal friction than 10W-40 or 20W-40, which translates directly into a measurable fuel efficiency improvement of 1–3% in daily urban riding. Hero has optimised engine tolerances for 10W-30 viscosity — piston-cylinder clearances, oil pump output, and bearing film thickness are all calculated for this grade. Using a thicker 20W-40 or 10W-40 oil in these engines adds unnecessary viscous drag, reduces fuel economy, and makes cold-morning starting slightly harder without any protective benefit.
API SN vs API SP: Which Should You Choose for Your Hero Bike?
Hero's official specification for most BS6 models is API SN minimum, with the BS6 emission system requiring compliance with catalyst-compatibility requirements. Carbo Oil's 01 GT 10W30 API SP exceeds this minimum by two full API certification levels — SP includes superior timing chain wear protection, better deposit control, and improved oxidation stability compared to SN. For the entry-level HF Deluxe or HF 100 ridden by high-mileage daily commuters (50–80 km per day), the Carbo Oil SUPER-FS 10W30 API SN is an economical choice that fully meets Hero's requirement. For the Splendor Plus, Super Splendor, and Glamour used in more demanding conditions, the 01 GT API SP is the better long-term investment.