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I live in FL, and use Mobil 1 synthetic 5w30. If regular motor oil was used prior or you are unsure, use motor flush first.
That's okay.
A 2006 Toyota Highlander on average sells for about 10 to 15 thousand dollars used according to Motor Trend. A new Highlander would cost around 20 to 25 thousand dollars.
its located in the back of the motor.
No, you can even mix synthetic with conventional oil. It will do no harm at all.
Yes but once you do there is no turning back and no mixing regular motor oil ever again with the synthetic oil....only straight synthetic....or use semi synthetic....now that can be mixed with regular motor oil in a pinch.
The best motor oil for you car depends on the car. Many old cars can only handle regular motor oil.
motor oil, of any kind, would kill most plants
Synthetic oil or a blend of Synthetic and regular oil is much better for your vehicle than regular oil alone. Synthetic oil is MUCH more expenshive. If you change your regular oil every 3 months or 3,000 miles I will be fine.
No, it won't. Synthetic oil typically exceeds Toyota's recommendations for oil, so this will have no impact whatsoever on your warranty.
Toyota recommends SAE 0w-20 as the best choice for your Highlander in cold climates and for fuel economy. You can use SAE 5w-20 but it is not the best choice. You can only purchase SAE 0w-20 in a Synthetic Oil so you can extend your oil/filter change interval to at least 7,000 miles or 10,000 miles if you drive mainly highway miles. Do not use any other weight oil.
The 2010 Prius uses synthetic 0W-20 oil.