Shell Helix HX6 10W-40 – Reliable Semi/Synthetic Protection for Everyday Engines
Shell Helix HX6 10W-40 is formulated to protect engines from sludge, deposits and wear while maintaining quiet, responsive operation. The HX6 line uses enhanced detergency and anti-wear chemistry to keep engine internals cleaner and extend component life, particularly useful for engines operating under urban stop-start conditions or in warmer climates where SAE 40 viscosity is desirable at operating temperature. The TDS and product literature indicate API SN/CF and ACEA A3/B3/A3/B4 performance levels for many HX6 10W-40 formulations, reflecting suitability across a range of petrol and diesel vehicles

Advantages & applications

• Good deposit control and oxidation stability for extended engine life.

• Balanced cold-start to hot-running protection for engines that call for 10W-40.

• Appropriate for mixed fleets and older vehicles where a thicker oil at operating temperature helps maintain oil film under load.

Usage advice: Use in passenger cars and light commercial vehicles where 10W-40 is specified by the manufacturer. For modern high-efficiency engines look at the HX7 or Helix Ultra families for lower viscosity and better fuel economy where 5W-30/0W-20 is required.