i have to same problem with my sierra ive changed the filter and it still leaks, i was told that its the oil filter adapter you can get one at autozone for about $20
If the casing is spilt a filter will leak an incorrectly installed filter will also leak.
Purchase the correct size filter and make sure is is a premium filter such as AC/Delco, Purolator, Wix, or Bosch. Remove the old filter and throw it away. Clean the mounting surface and look at is closely for any scratches or gouges. If it is clean and not damaged, apply a thin layer of oil to the gasket on the new filter or it can leak. Turn the new filter 3/4 turn after making contact with the mounting surface. No more than 3/4 turn or it can leak. You will not have a leak if you do this.
One way to find an oil leak on a 2000 Kia Sportage is to place a sheet of cardboard under the car when it is parked. By noting where the oil is dripping from, a person can determine about where the oil leak is on the motor. One place where oil may leak frequently is a full oil filter.
Leak WHAT??????
Look for gasoline leak at fuel injectors. You can usually smell it. If no leak change air filter. A plugged air filter can cause too rich mixture and too much gas usage. Also inspect gasline from tank to gas filter and around filter.
The filter may be lose if this is not the case the threads around the filter may be "stripped". Try changing the filter if this does not work I would take your vehichle to a certified mechanic.
Drive it high speed two miles to get it up to operating heat. Stop and raise the hood and look for the leak. Have a flashlight too. When the vehicle stops the engine will super heat the water and the leak will show itself. Be carefull - it can be violent. If the interior smells sweet you may have a leak in the heater core. LoL
There is a fair amount of fuel that will leak when changing the filter.
the quick disconnect sometimes do leak. many times the rubber hose deteriorates and leaks.
They are not designed to leak. This filter may need tightened or replaced.
The filter cap will be brocken and oil can leak through that way just change the filter cap
replace the housing o ring