Developed for general servicing requirements in modern petrol engines up to EURO 6. Designed for modern 'flex-fuel' systems providing additional acid resistance, preventing rust and corrosion. Suitability for E85 applies only to OEM spec engines. Caution: H-Tech 100 Plus 5W30 is designed for fuel economy and is not suitable for performance applications. For modern engines fitted with low-tensile piston rings potentially causing oil loss, use 6100 Synergie Plus 5W40 or H-tech Prime 5W40. For heavy duty applications such as towing or off-road driving, use 8100 X-cess 5W40. Use 8100 X-max 0W40 for very sharp engine response in low to mid range and improved protection in high heat conditions. For highly tuned engines and motorsport, use Motul Sport 5W40, Sport 5W50 or Motul 300V for the ultimate in performance and protection. Use 8100 X-cess 5W40 or 6100 Synergie 15W50 for tuned pushrod engines with mild cam profiles (Lift, duration, ramp) and/or moderate valve spring pressure (<180psi) and/or flat tappet lifters requiring more than 1100ppm of Zinc. NOTE: Do not use Zinc additives. More than approximately 1200ppm of Zinc is ineffective, negatively impacting other wear protection additives and is considered Zinc saturation or Zinc dosing. If cam wear occurs, investigate mechanical or oil flow issues. Consult Motul. High quality engine oil flush additives are encouraged, however do not use leave-in additives ('performance improvers') with any Motul engine oil products.