Starting a D Series thats been sitting for a year

my eg6 has its stock d series in it still
im about to start it up this friday when i sign the papers
before i start it i want to know things like
how to drain the oil
how to drain the coolant
how to drain the gas
and anything else that i should do/check
im about to start it up this friday when i sign the papers
before i start it i want to know things like
how to drain the oil
how to drain the coolant
how to drain the gas
and anything else that i should do/check