I went to Jiffy Lube in Seaford, NY this morning to get my oil changed on my work car. The car was running great, but it was just over the 3, 000 mile point. Jiffy Lube tried to sell me everything, and would not take no for an answer, and even put my mechanic down, who is a personal friend. After they finnaly understood i just wanted my oil changed, which i even wonder if they did? They called me out to the bay, and said my car was making unusual noises, which it was NOT making when i drove in. Then my check engine light when on. I had to drive all day worried about the car breaking down. i took it after work to my mechanic, and he said they pulled the spark plug out and wedged it in between the others. he put it back and the car sounded normal and the engine light went off. When i called them they said they did not do it, but I know they did. I am going to put them out of business. Or perhaps they will put themselves out of business with treatment like i got. I was also wondering why my car was the ONLY car there???