Hey guys I get my hands on alot of 75 w 90 gear oil. Synthetic of course. I am wondering if I can use it in my 2013 renegade 1000. Gear box and diff. I plan on using shell Rotella 5w40 in the engine. Thanks for thr help. I have searched but a bit confused with all the people running different stuff. 75 140 and chain case oil and 75w90