Complex sentence: His 1996 Formula Three season was a success, showcasing his skills as he finished fourth in his first race and in his second was first, only to be disqualified due to using illegal fuel.
Split into simpler sentences: His 1996 Formula Three season was a success, showcasing his skills. Tuero finished fourth in his first race, and he won his second race, only to be disqualified due to using illegal fuel.