A friend is looking to buy a 99 Sienna, and says he was told that it requires premium. I have a 2000 Sienna, and have always used regular. I believe that the engine is the same.
- posted
18 years ago
99 Sienna need Premium Gas?
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- posted
18 years ago
I have a '99 Sienna and have used regular gas since I bought it new. It has more than 100K miles and there are no major problems so far.
I have tried premium gas a few time and never found any difference in performance.
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- posted
18 years ago
Now familiar with the Sienna, per se, but if it is like other Toyotas, premium gasoline (91 octane) is recommended (for max performance under load), but only regular (87 octane) is required.
Merritt
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- posted
18 years ago
Did you try going up the same mountain with a tank of both? LOL
mike hunt
Roy wrote:
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- posted
18 years ago
Like what other Toyotas? I've had a few and have never seen that recommendation.
Pat