I have a new Bro-inlaw that only knows how to put gas in his 2013 crew cab Wrangler. He asked me to check out his jeep and see if I can find issues. Opened hood pulled out a spark plug I've never seen such a gap in plug way worn, he said MPG is bad.. He's running biggest mud terrain tires that fit stock, he never goes off road. Most is down a dirt road that a prius can handle. Asked him why he needs those tires. He bought the tires 8 months ago and they are already over half gone. He does alot of highway driving. He said they look cool. Crawled under found front drive shaft boot gone and new design joint dry from grease. Once you alter a stock jeep it changes the angle of the shaft and wears out the boot fast. Only way to fix it is replace rubber boot, zero way to grease after. Shocks are beyond shot. He's willing to learn how to fix it but when we torn into it once he runs into an issue he gives up. After working on his car/jeep I hate the thing, it's the worst vehicle to work on. Not made for offroad.
