RELIANCE LUBRICANTS

1L 4T Motorcycle Oil SN 20W50

A high-performance semi-synthetic 1L 4-stroke motorcycle engine oil (20W-50, API SN) engineered for smooth throttle response, superior anti-wear protection, and dependable lubrication under high-temperature and heavy-load riding conditions.

What this oil is for

Formulated for modern air- and liquid-cooled 4-stroke motorcycle engines that demand robust protection at high operating temperatures — sportbikes, cruisers, heavy commuters, and single/parallel twins used in city traffic, long-distance touring, or hot-climate conditions. Ideal where a thicker hot-grade oil (20W-50) is recommended by the manufacturer or chosen for increased film strength and reduced oil consumption in worn or high-load engines.

Key performance highlights

API SN certified — meets modern gasoline engine requirements for deposit control, oxidation resistance, and emissions system protection. High hot-viscosity (20W-50) — thicker oil film at operating temperature for excellent load-bearing capability and reduced metal-to-metal contact under stress. Semi-synthetic base (advanced blend of synthetic and high-quality mineral oils) — balances thermal stability, shear resistance, and cost. Robust anti-wear package — contains proven anti-wear chemistry (e.g., ZDDP and complementary friction modifiers) to protect camshafts, rocker arms, and gear surfaces. Thermal and oxidative stability — resists high-temperature breakdown so the oil stays cleaner longer and maintains protective properties on long rides. Superior detergency & dispersancy — keeps combustion deposits, varnish, and sludge suspended for cleaner pistons and rings. Corrosion & rust inhibitors — protects internal parts during stop/start city riding or prolonged storage. Good shear stability & viscosity index — maintains film thickness under mechanical stress and across temperature swings.

How it protects and performs (technical breakdown)

Viscosity control: 20W-50 provides a lower cold-start viscosity than non-multigrade heavy oils (the “20W” part) while delivering a thick, protective hot film (the “50” part). This thicker film reduces metal contact under heavy throttle, hard acceleration, towing, or sustained high RPMs. Anti-wear chemistry: Zinc dialkyldithiophosphate (ZDDP) and advanced anti-wear agents form sacrificial boundary films on metal, preventing scuffing at times when hydrodynamic lubrication is lost (e.g., tip-to-face contact on cams/rockers). Oxidation inhibitors: Additives slow oil thickening and acid formation that happen at high temperatures, extending oil life and protecting bearings and journals. Detergents & dispersants: Neutralize and carry soot and combustion byproducts into the oil filter rather than letting them form hard deposits on piston crowns and ring lands. Friction modifiers & friction control: Tuned to give smooth clutch operation (where wet clutches are present) and reduce parasitic friction for responsive throttle feel. Viscosity Index Improvers (VIIs): Maintain a stable multi-grade behaviour so the oil doesn’t thin excessively at high temps or thicken too much at low temps.

1L 4T Motorcycle Oil SN 20W50

What this oil is for

Key performance highlights

How it protects and performs (technical breakdown)

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