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The suspension on my 2008 Jeep Wrangler squeaks when I hit a low spot (maybe 4-6" from the grade), even at slow (<10 mph) speeds. Where can I lubricate or what should i check to eliminate this squeaking?

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I'm curious to know whether or not you get the full service lube or you do it yourself. Suspension systems I've had typically have multiple lubrication points requiring periodic greasing. The full service lube's you get from the quick-lube type places are supposed to hit all these spots, but I would be suspicious of ... pretty much anybody I don't know and approve of doing anything to my vehicle. So, I guess I'm asking if you know whether or not the suspension has had proper periodic maintenance. –  Captain Claptrap Mar 8 '11 at 0:35

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Claptrap is on the money with grease points, but many modern cars don't have them, and I can't speak to how the Wrangler is setup. That is the perfect starting point, though.

The next step would be to spray down all the rubber mounting points (suspension bushings, shock mounts, etc) with white lithium grease to see if that quiets it down at all. I fear that a normal spray bottle won't be able to get into the 'inside' surfaces of the rubber parts that are causing the squeaks. That leaves you with the final option of unbolting the problem elements so that you can rub some grease on the rubber surfaces. The downside with this solution is that suspension can be very dangerous if you loosen the wrong bolt. In fact, it can be deadly.

So, I would recommend trying the grease points, and the white lithium grease options before proceeding any further. Hopefully, that fixes the issue.

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Check the swaybar bushings first, they probably need lubrication. That's a very common issue as they're typically located in a place where the lube gets washed out of them pretty easy. –  Brian Knoblauch Jun 2 '11 at 18:51

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