just rebuilt my 2015 ZForce 800 engine. The engine threw a rod through the engine block. Bought a rebuild kit from AliExpress. After The rebuild and start up for a few seconds, i found coolant in my oil... lots of it. However, I'm not sure where the leak is from. I did notice some small leakage from the seep hole. the only one part I left out was the one way clutch bearing. so, has anyone experienced this before, and what were your findings and repair.

[2015 Z Force 800 53/Trail EPS]

The manual shows the coolant path and jacket areas so look there. Have to ask, sense the rod went through the case you needed a complete new case as there would be no fixing it. But, did you have the cylinders and heads magna-fluxed for cracks? 90% of coolant leaks after rebuilds are head or cylinder to block gaskets but that leaves the rest to cracks (including valve seat cracks), line o-rings and/or missing parts. Slight leakage from the weep chamber is normal for a new CFM mechanical seal. As long as it can leak out the tube it can't get to the oil seal on the other side.