This study examines the effect of hydrogen (H2) incorporation at different flow rates with a ternary blend of diesel-plastic grocery bag derived oil-ethanol (D80P10E10) for application in common rail direct injection (CRDI) compression ignition (CI) engine. A detailed combustion analysis, along with performance and emission analyses, has been performed. H2 has been incorporated at three flow rates: 5, 10, and 15 lpm. Peak cylinder pressure, net heat release rate, cumulative heat release rate, and mean gas temperature increased with the induction of H2 in D80P10E10. Furthermore, H2 accelerated the combustion of D80P10E10, leading to an earlier start of combustion and 50 % fuel conversion occurring at an earlier crank angle. This has also resulted in shorter combustion duration. A reduction in brake-specific-fuel consumption and increase in brake thermal efficiency were also observed, but NOx emissions increased slightly. However, the H2 induction has exhibited a substantial reduction in carbon monoxide, unburnt hydrocarbon, and smoke emissions across all engine loads. Overall, H2 can be considered a suitable combination for D80P10E10 for enhancing the combustion and performance characteristics of the CRDI CI engine while reducing most emission characteristics except for NOx.