Hot Front Differential
I noticed a whining sound around 40 mph when I have my 4WD engaged.I shut the 4wd off and drove home. When I put my hand on the differential itwas so hot I couldn’t leave it there. Much hotter than my rear differential. Ichecked the fluid level and it was a little low. I topped it off with 80W – 90 gearoil. I took it around the block and it seemed to slightly improve but thewhining is still there and the differential is still getting much hotter thatthe rear.