oil and coolant lines?

[boostaholic]

question.. now i see everyone runs external lines... for obvious reasons.. BUT.. my ponder is... location.. and certain areas... for not getting stuck in bends and such or pooling.. like i have seen some describe? forgive me if this has been asked... also... for oil is is better to use two or 1? and same with coolant any help appreciated... specific locations that have worked well???

thanks