Originally Posted by Zyonara91

Just stick with a thicker 5w30 I would say. Motul EFE, Redline 5w30, M1 ESP 5w30 and PP Euro L 5w30 are available. They have a high HTHS rating (3.5, which is a good thing) and they run on the thicker side of a 30 grade oil.

I used Liquimoly 5w40 once, never had a issue, but I dumped out the next season without any ill effects.