befor i drive the truck any ware i check the oil,coolent and master.so oil sloshing shouldent b the case.but i dont no ive owned the truck for 5 years and dident relly tare into it the first owner was trying to race it found out it ran a 16 at like 80mph and sold it to me calling it junk.i love my 66 and cant wait to drop the 428 im building in it