Yes, turpentine will be fine, but some people just suggest warming it up to make it less viscous. I wouldn't go more than 50°C, so sticking it in a bowl of very warm (not boiled) water before hand should help the initial coats penetrate. If you use turpentine, then look for gum turpentine. DingoBass recommends using this over standard turps. Try art stores for the best stuff rather than hardware stores.