I have an MC07 with a lefty behind it in my taco. Due to the slope of the drive-line i cannot use the BIGMIKE method, when i dump fluid in it comes right out the "fill" holes on the rear case and the fill hole is between the front output and the case, so i cannot get a bottle in there. So here's what i do: i pop the front case shifter off and dump in 2qts and let it sit for 10mins or so and put the shifter back on. Anything over 2qts the crawler/tcase assembly vents it out.