^ Your 92 is the equivalent of our 87/88 octane. Most countries have a different equation to get the octane rating from the US.

 

Makes a lot of sense

Still costs 80 dollars a tank for just that :\

 

where the heck do i find 93 octane we only have 91 in sacramento ...hahaha been using 91

 

majority is 87, but i just put in premium today because the price was good. i get better response, acceleration, less idle roughness, and better MPG.

 

87 - 89 most of the time but runs just fine on regular too. I do seem to notice just a little better performance with the higher octane but nothing I could put my finger on and shout about. Mileage is about the same. I mix it up sometimes, not on purpose but the other cars in the household use regular and sometimes we forget and punch the wrong button or flip the wrong lever at the pump and just put regular in.
Non modified engine-96 ES300 188,000 miles.

 

I've always used the cheaper 87 (or worse if it exists) before, but just tried 93 since my check engine light is on (presumably knock sensors). Noticed fullly topped off tank 335 miles of range. Seems like much better gas milage on the road. I've gone 60+ miles since fill up and only 1/8 tank down. Keep in mind my gas milage is likely way off because of the knock sensors, but it was downright horrible literally watching the needle fall with the last tank.

 

i run 87 put the few times i put i have noticed a slight difference in idle roughness and a few more mpg which is OK if u wanna cough up the money to run it

 

i use 91 most of the time.
noticed when i use 87, my mileage really gets bad.

 

Already posted to this thread but just can't resist commenting about spending extra money for premium fuel. Usually the extra cost around this area from regular to premium is tens a gallon, $2 a tank. That's not very much money, especially if it helps the car run cleaner, a bit stronger, get a few more miles a tank of gas. Money better spent there than on some of the parts bought from the dealer only because "it's a Lexus". One less cup for coffee at Starbucks or even Micky D's.
Sometimes to save a little you need to spend a little, and with some cars, not all, a couple bucks more per tank for premium will save a whole lot more in the end. A bit more mileage, cleaner burning engine that stays tuned longer, exhaust system will last longer, your smile will stay longer with the nicer performance
96 ES 300 road mileage 27+ sometimes close to 30+. No CEL, no stumble

 

Exactly...Not to mention, you bought a Lexus over a Toyota. So, you made the decision to buy a premium product... "You gotta pay to play" lol

 

Unless the manufacturer doesn't recommend premium fuel, in which case you're simply wasting your money.

 

^^ this...

And you Americans whining about expensive gas over there... Please. It costs me 80$ to fill my tank with 87 at 1.22/L, when I go to the USA I laugh since it works out to 0.80/l for reg, and like 1$/l for premium. At least I'm not in Europe where my cousing spends 2.50-3$/L...

 

In Canada here, i put in 89. i have a 97 es300 with 118K miles. i get about 17-18 mpg city with 89. i will now put in 87 and see if it makes a difference. here in canada, they put alot of ethanol in most blends (except Shell premium ie 91). so i hope 87 wont make it worse but lets see!

 

We have 96es300 and always filled with regular. Brother insists it needs premium. This is fairly low-compression engine and runs fine on regular or am I wrong?

 

What does the manual recommend? Most of those cars are suppose to have 91+. All US cars are by law suppose to run fine on 87+ but that doesn't mean it's good for the car.