I am trying to resolve an
oil in coolant issue right now. No coolant in
oil though. However I have the fe390. I am looking for a bad gasket and hopfully not a cracked block. I should know in the next week or two. I tried to flush it out but the oily sludge seems to always rise back to the top. I added some dishwasher soap to try and break down the
oil but it only makes the mess smell lemony. I would contact your engine guy/supplier since yours is fairly new. What do they say? Good luck!
John