1995 Vauxhall Cavalier oil change

very easy,but change your oil fillter as well,this is what I do,and most people,warm up your car,not to hot,find somthing to drain your oil in to,dont forget its got to fit under your car and hold over 5 lts,undo your sump plug,could be nut or A key,and drian your oil,you will get it on your hands,or drop your plug in the oil,dont worry,let it drain,take off you oil filler cap,then unscrew off you oil fillter,be carfull its full of oil,pour the oil into your old sump oil,Then put back your sump plug. Get your new oil fillter and pour some new oil into it,Rub some oil onto the oil fillter rubber seal,then screw back,hand tight but tight,Then pure your new oil in,not to fast or you will get it on you engine,keep checking your level on the dip stick,you want it under max,Then put back your oil cap,Move your old oil from under your car,Then start up your car,when on running temp switch of your engine,leave for a couple of min,then re check your level,you get a higher reading when warm,(Dont over fill could damage your engine,good luck.O yes check your oil fillter make sure not leaking,and sump plug,