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Oil pan bolt stripped - wear and tear of poor mechanics? (vehicle, motorcycle)
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(that should say OR poor mechanics in the title...) I have a 2006 Honda Accord EX-L V6 with about 113,000 miles on it. It was recently at the dealership and had the timing belt, water pump, and tensioners changed, along with an oil change (I only went to the dealer because they had a special for $700, which seemed pretty good).Anyway, after they finished that work, one of the employees gave me a laundry list of things they found wrong with the vehicle while they were at it. Most of it seemed like minor things I could have done elsewhere (they wanted $560 for front brake pads & rotors!)One thing that caught my attention however is that apparently the bolt for the oil pan is stripped. They stated that at some point in the past, someone over tightened it and caused the damage. They want $550 to install a new oil pan.Now I"ve only gone to one place for my oil changes, so I called them up and asked them about it. According to the manager I spoke with on the phone, it"s simply a wear and tear issue, and that it"s related to having a weak aluminum oil pan. He stated that he sees it all the time and it"s just one of those things that eventually happens.It strikes me as odd how a bolt can become stripped from wear and tear, however. If I get an oil change every 5,000 miles (and I usually go a bit beyond that), that"s only about 20 changes over the life of the car, which doesn"t sound anywhere near enough to strip a bolt.My mechanical knowledge is lacking, so I wanted to get some input here as to whether or not this could be a case of wear and tear, or if the guy is just trying to cover up for poor worksmanship.