[iamhubert]

I've used 0w20 oil since I've bought the car, I understand what the manual says about what oil I need to run in the car, I simply decided to try out a different weight. Even if the manual doesn't say it is required, I'm sure Toyota will try to make it seem so just so they don't have to cover the engine, at least that's what I'm assuming they will do. Hopefully they will say what you're saying, that it is recommended and not required and the use of 0w30 oil won't cause any issues, and that is my worry and the whole point of this thread was to see if anyone had any experience dealing with Toyota with a similar situation or has any knowledge on this just so I can be properly prepared.