i have been changing oil in my car and before that my parents cars for about 35yrs ,i must have changed the oil on a car about 100 times without issue until the other day , i had changed the oil in my car and after i was done did my usual leak inspection and all looked good , the next day on the way home from work i was stopped at a light and saw smoke pouring out from under the car , i pulled over crawled underneath and the bottom of the car was covered with oil from the filter area , the filter was on tight , so i thought 'is this the wrong filter? , is it defective?? , either way i need to get to a parts store before i moved the car , so i got a filter, a wrench 5 qts of oil and a pan doing this along a busy street in los angeles ,when i got the old filter off , there was my problem the gasket from the old filter stuck to the gasket on the new filter creating an imperfect seal ! these are the kind things you hear and read about and say 'how could anybody be so stupid'! i had blown out 3 of the 4 qts of oil and a few blocks more of driving the motor would have been toast , i was very lucky , it is one of those mistake you only make once