My car has done 220,000 miles and this is the first time the upstream oxygen sensor has needed replacing. I drove the car up the ramp to have enough space under the car. Space in front of the sensor is limited on this car so with patience I put on the oxygen sensor wrench with a 1/2" jumper and easily removed the sensor in 5 minutes. Well worth the money. I used some PB Blaster. Oil pernitrate 2-3 days ago Was concerned that winter salt in NE Ohio would rust the exhaust pipe oxygen sensor to death.