Just drained the oil, darkish, went brown tent, also has very small seal leak at drive shaft.. when flushing oil with thinner oil, I decided to turn the wheels to maybe clean out the diff better.. I took a video of how it sounds but it won't let me post it.. spinning forward it's like an intermittent slight grinding noise.. in reverse it has a little worst noise but it doesn't free spin as easily.. barely wants to spin on its on.. while driving it i heard nothing.. but it also has a loud exhaust and cams.. so it probably would be hard to hear anyways.. does this sound like a problem or anyone experienced this while flushing diff??
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