After about 20,000 miles since the last fluids change, it was time for new fluids in my transmission and rear differential. On the second generation Subaru Forester with a manual transmission, the front differential and transmission share fluid. In the front differential and transmission I used a 50/50 blend of Redline 75W90-NS (58304) and Redline 75W140-NS (57104) for a total of four quarts. Note that both of these products are NON limited-slip differentials and transmissions. In the rear differential I used one quart of Redline 75W90 (57904). Note that the rear differential gets a DIFFERENT fluid than the front differential and transmission. Don’t mix this up!
A few hundred miles after changing the transmission and differential fluid, the car is running and shifting excellently. The previous transmission fluid I had in the car was the standard Subaru stuff. I don’t think it ever felt as good as my Redline blend does now.
I also used some motorcycle windshield cleaner to clean up my headlights in order to have better nighttime visibility while I was working on my car.