It looks like you need to change your pinion seal cos it's leaking, as far checking the fluid in the differential I don't know how to check since they're are no dip stick. I think the only way is to stick your finger in there and feel the oil and just add accordingly.
MPT tune, 3:73 gears, borla stype, frrp x pipe, Mac ceramic shorty headers, airaid cai, Jlt separator, koni orange shocks and struts, SR Springs, gt500 mounts, J&M Panhard bar, Bmr LCA, 2010 gt500 wheels, roush chin splitter and RTR stripes... 😎 🚘
2016 GT RACE RED MANUAL aka " RAGING BULL"
Borla stypes cat back exhaust, tint kit all lights, 5.0 race red shift knob, MMD V SERIES SPOILER... and more to come...