Some of you may agree or may disagree....I wasn't about to throw my back out removing spark plugs....so when I felt that they were in there really tight, resorted to one of my leverage tools. This time only a half of a floor jack handle. No room for the whole thing....lol I wouldn't do this on anyone else's vehicle, but for me it broke most of the plugs loose. Only two I undid by hand. The others needed persuasion......

Spark plugs from Left to Right.....
#8 #6 #4 #2...

you can see oil at the top of the threads on 3 of the plugs...

Spark plugs from Left to Right.....
#7 #5 #3 #1...
oil at the top of all of the threads...