Question: how do you evolve eevee into jolteon in pokemon platinum?
Answer: Get 7 Eevee. Use a Water Stone on Eevee to get Vaporeon. Use a Fire Stone on Eevee to get Flareon. Use a Thunder Stone on Eevee to get Jolteon. Level Eevee in Eterna Forest near the moss rock to get Leafeon. Level Eevee on Route 217 near the ice rock to get Glaceon.