Got around to changing the rear differential fluid today. Had to position car heading downhill backwards with rear tires on ramps. This gave me enough space to slide under the car and access the drain and fill plugs while still leaving the car somewhat level. I had no skinny sockets to remove the plugs so I had to use a 15/16" wrench on both. It used about 3/4 quart to refill, although not that much was drained out. I was concerned the fluid was going to drain all over the exhaust, but the stream missed it by about 1/2 inch.