steerg

We have used 87 octane in our '97 ES300 since it was new. Now has 137,500 miles on it and it runs like a swiss watch. The computers in the engine adjust almost immediately to the lower octane. Lexas and others recommend premium gas because it will up horsepower sightly and also fuel mileage. However, the small difference will never offset the price differential between regular and premuim and you will never notice the hp loss. The car doesn't care, but your wallet may.