What episode when goku turns into a false super saiyan?

Goku transforms into a False Super Saiyan in Episode 5 of "Dragon Ball Z," titled "Goku's Unusual Journey." This transformation occurs during his battle against the Frieza Force on Planet Namek, showcasing a temporary surge in power but lacking the true characteristics of a Super Saiyan. This form is marked by Goku's fiery aura and his hair turning a golden hue, although it does not fully align with the iconic Super Saiyan transformation.