Oil considerations.

I have a 2012 limited crew max 4x4 with a 5.7 with 191k on it. I am currently in TX working and finding that I have to idol to cool down and get out of the sun. My engine says 0W-20 oil. Would it hurt to put 0W-30 or maybe 0W-40 in it to help maintain good protection when I am at an idol for a time?

 

use the recommended oil. The 30w will not hurt anything but I can't see it gaining you anything either

 

I'd go with an extended service, high-mileage, full-synthetic in 0-30 or 5-30 in Tejas. I like mobil 1 but most any brand all the way 'down' to wally marts full synth high mileage will do just fine. What OCI do you go with?

 

I usually stick to the 5k change. I tend to idol alot. Its hot in west TX.

 

I am looking for lil extra protection. I tend to idol a lot. And it gets hot in west TX.

 

See link below. Scroll down to MAINTENANCE DATA, Oil System. You will see the following:

Recommended engine oil SAE 0W-20, 5W-20, 5W-30, 10W-30

https://www.engine-specs.net/toyota/3ur-fe.html

For Texas temperatures, you won't need 0W for starting, and 20 or 30 viscosity will be better for higher operating temperatures. I just changed my 4.6L over to 5W30 Mobil 1 Extended Performance. In the USA, the 0W20 is for fleet fuel efficiency (CAFE). In Mexico and other hot countries, 5W30, 10W30 oils are recommended for the UR engines.

 

I don’t have an issue going with slightly higher viscosity in the Summer heat. I wouldn’t overdo it, or try to outthink the engineers. I’d stop at 5w-30, then a lower number for the TX Winter. It’s also mostly splitting hairs in what one perceives is better.

 

I want to thank y'all for the info. When dealership changes my oil they told me nothing but 0W-20. But that seems very thin in the heat and would break down quicker. I think next oil change I will do some 5W-30. Thanks to all again.

 

Liking this oil, see 2nd note in Red.