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Hi All, I'm new here, I love my Ford trucks and my 08 Lariat is no exception, about a month ago I noticed alot of hicupps on the highway, hicupps are those cuts they put on the side of the road to wake you up when you veer off during a good sleep. So I'm cruising along doing about 110km and when I give it just a bit more gas pedal it feels like I just went over 5 hicupps and then drives normal, I met a mechanic and he said it was my clutches slipping in the rear end, I changed the rear end oil as per Ford specs and it happens more frequently now...any thoughts before I go to my local Ford dealer for the rubber glove treatment?