Engine oil Shell or OEM Toyota

Shell rotella t5 its valvetrain runs much smoother and quieter with a thicker diesel oil.

I only use Rotella T6 in all 6 of the cars at my house.

I've used Rotella T6 in literally all of my bikes since 2017 because it is cheap and has JASO MA2, it is deisel oil.

I've been running rotella t6 4w40 in my 81 cb750c for the past 15 years. I also use it in every other bike I own or have serviced and my 4 wheeled vehicles.

I use Rotella T6 5w40 in all my vehiciles. It's a quality oil that works well for everything I own from mechanical turbo diesel to motorcycles to big blocks.

something you might consider is switching to Shell Rotella T6 5w-40.

you can find many testimonies to the benefits of using T6.

For newer vehicles I am in the camp of: if you want the car to last a long time use the 5K change interval with the exception being in the first 10 K. For the first 10K miles I would do 3 changes (not just 2) to be sure any debris/material from the break in process is cleaned/ cleared out quickly before it can potentially metastasize into a bigger issue (much later on);

Just do it every 5,000 miles. It’s the standard for most vehicles. Unless it burns oil often, then maybe 3000miles. I have a 2019 camry se and I’ve done it every 5k miles. It’s currently at 96k miles, oil still looks golden and brand new before I change the oil after every 5k miles.

The cars are very capable of doing 10k mile intervals between oil changes AS LONG AS YOU USE THE PROPER FULL SYNTHETIC! You won't get any problems doing it that way, however by 5k the oil will have a little bit of dirt in it so some people will do it at 5k just for peace of mind and to make 100% sure that the engine stays clean.

I do every 5000 miles because it's easy to do and cheap if you change it yourself.