Looking for some help troubleshooting an issue with a Toyota 8FGC35U - LP engine. It looked like there was a little bit of moisture in the engine when I took off the oil fill cap. So I checked the dip stick and the oil looks normal. No smoke from the exhaust. No leaks around the engine. The coolant looked a little oily though. So we drained the radiator and oil separated to the top and I'm wondering how it got in there and if I have an issue.