Does anyone know what the maintenance interval is for Rear diff fluid for a 2010 lexus RX350 AWD?

rear and front diff fluid (transfer case)?

thanks

 

I too would like to know this. I keep getting flagged every oilchange. They keep saying every 15K, I call BS....I am thinking more around 75K...

 

Every 30k miles unless you fall under the "extreme" driving category(towing or off road driving).

 

It can go higher than all mentioned above. Gear oil can last out to 100K+ depending on what you are using. However, 30K is good rule of thumb to at least check on the fluid. I always take a peak under my RX300 every month to see if there are any leaks or any issues. When that gear oil gets really old, it has a very nasty rotten egg smell.