Why does it spit fluid when i overdrive it on the highway,nothing is leaking around the pan or anythingThe unit is completly sealed up ,where is it coming from,my only guess would be the blow hole in the top.The fluid level is proper too. Man the smoke this thing produces when the fluid hits the exhaust pipe is extremly annoying and stinky.When i do not push it is fine.This just started happening any input would be apreciated.