Another approach, is to put engine degreaser on the stain and scrub it with a wire brush, then cover with kitty litter prior to sweeping it up.
Ways To Eliminate Transmission Fluid Stains from Your Driveway
Transmission fluid spills or leaks might leave a bright red stain on light-coloured concrete.
Here are some suggested steps for eliminating the stain:
Spray the stain with oven cleaner and let it sit for 10 minutes.