yeah, not a surprise...little known fact here...EVERY time tranny fluid be it synthetic or not, is over heated like when rocking it...it's life is cut in half...your car needs to be flushed every 30k...rock it once, now it needs to be changed in 15k....do it again...7500 miles....etc... remember, automatics are hydraulic creatures, they need thier fluid to work, and it has to be clean fluid.