Is Premium fuel necessary for the avalon?
no not at all. its just like saying your bmw requires mobil 1 oil. plain old auto parts store oil will do the same thing, its just fucking oil. basically, what happens, is that toyota has signed a deal with probably shell or esso, saying that you need to use Premium. its just a scam.
Wow... I don't even know how to begin on this one... 1) BMW only recommends Mobile 1 but they actually have a requirement by warranty that excludes most conventional oils. Syn Blends and Synthetics tend to meet it. This is due to small oil passages on various engine components. 2) If they recommend hi-octane it generally means the car has fairly advanced timing and you can get various problems from using lower grade. Predetonation, Pinging, Incomplete detonation, engine run-on... Although not likely here in the states because the gasoline rating is generally higher than stated. Additionally the rating may be different. You'll notice many pumps state they are rated a certain way. (R+M)/2 or something like that. Anyway on many foreign cars the rating is done with a different system. Can't remember how it works but I know the 93 octane minimum on older Porsche actual equals 89 octane with the U.S. system. Not sure if that applies to your vehicle, but read the fine print. Likely your car will be fine with a lower grade, but if it asks for 91 don't get 83... only go one grade down at the most, and if the car hesitates or makes an odd sound, switch back. Keeping the car well tuned will decrease many problems associated with low octane gas. Since you're talking about a Toyota that requirement may be there because they don't expect you to keep up with your car.
i like this guy. he knows what he is talking about unlike most user on here i bash on. Gj giving correct advice!
No, but you get 272 HP on Prem, 268 HP on Reg, and you will get 3-4 better MPG on Prem, and for a lousy 20 cents a gallon you get 4 points more octaine over Reg.
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