the only change I have seen in my 04 is a loss of gas milage. I have gone down from 18mpg to 15mpg. So it is now worth the 20 cents more...almost. Also with lower oct gas you run the risk or knocking or build up because it will not burn as hot as the higher octain. I do not suggest you put in an octain booster that can hurt your injectors.
You should be fine with 91 octane. The higher the octane, the more you engine will like it, but 91 octane is enough for your ES 350.
87 Octane
93 octane
Most experts agree that there is no measurable benefit to using higher octane gasoline. If your car says to use a higher grade, it should be heeded, but if not, use the "cheap" stuff.
87 octane
Any gasoline rated at least 87 octane.
For gasoline- engine models destined for use on the North American continent, 87 Octane.
Yes you can use premium gasoline in unleaded because premium gasoline is also unleaded. The only reason it is called premium gasoline is because it has a higher octance then regular unleaded. Regular unleaded has an octane rating of 87 and premium has an octane rating of 92. Premium gasoline burns slower then regualr gas because it has a higher octane rating.
One can use an unleaded gasoline of a Toyota 4AF. Premium gasoline may also be used since it is also a type of unleaded gasoline with higher octane.?æ
NO,,use Octane booster instead,,adding a lot alcohol will clean out the fuel system so much that might plug up the filter and pump.
no!! dont be cheap and buy the the higher octane!!!!
87 octane regular. Using any other higher octane fuel is a total waste of money and will provide no benefit whatsoever.