Prius Needs Premium Gas?

Cold like the weather is cold, or like right after the car has first
started?

I am pretty sure it does this for me even after the car has been running for
a while ...

"Bill" wrote in message

>
> "Chris Shearer Cooper" wrote in message
>
>> We got a Prius about a month ago, and so far it seems like the car is
>> happier with premium gas. With low-octane gas, when the gas engine shuts
>> off, it doesn't do so smoothly - it kind of "ka-chugs" a couple of times
>> before stopping. Is this normal?
>>
>> Thanks!
>> Chris
>>
> Mine does that sometimes when it is cold. I understand this is common. I
> use 87 octane and that works fine.
>
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In article ,
"Chris Shearer Cooper" wrote:

> We got a Prius about a month ago, and so far it seems like the car is
> happier with premium gas. With low-octane gas, when the gas engine shuts
> off, it doesn't do so smoothly - it kind of "ka-chugs" a couple of times
> before stopping. Is this normal?

It's normal. The engine is burning off the last little bit of gas so it
doesn't evaporate (evaporated gas being a worse pollutant than burned
gas). Prius never needs premium; if it ever pings, it needs a repair.
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