Milky means that there is water in the fluid. You need to have the radiator checked for an internal leak.
Milky white.
Prostatic fluid can be clear or a milky white color.
A crack in your oil pump shouldn't make the fluid milky. Water mixed with oil will look milky so I suspect you have a cracked block or blown head gasket.
An enzyme called lipase breaks down fat into a milky like fluid.
The trans fluid will take on a pink, milky look.
Water or antifreeze.
Water in fluid as a result of leak or condensation. Time to flush and refill with new.
Chylopericardium (milky fluid inside the pericardium) by RAMACHANDRAN.S
Bindweed is poisonous if the milky inner fluid gets onto you.
Probably colostrum.
The transmission fluid cooled by routing it through the radiator. The fluid probably is a milky color because the radiator had failed internally allowing the coolant and transmission fluid to mix. Check the coolant and if looks milky change the radiator, coolant, and transmission fluid.