Is it a good idea to move from Synthetic oil to normal oil ?

[IllusionX]

Originally Posted by bronsin

5W-30 is what the owners manual says for all climates but Phoenix gets to 100+ so you might want to speak to the service manager at Toyota and ask them.

Normally the OM is the bible for all such questions. However if I moved to Phoenix the first thing Id do is ask the SM at Toyota what they recommend.

So what did they recommend to you?

You know some part of Canada regularly get 100+°F in the summer? I would say unless you live in the middle East, where temps stay 100+ at night, you don't need heavy weight oil.

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