Will Sam's Club 85 fuel harm my engine?

[graywolf_14]

The difference in using 89-91 instead of 87 on your yaris is nothing. Alot of high compression cars use higher octane like the svt focus. All turbo cars use higher octanes. But a 90hp car is not going to need it and u are spending just as much on that premium gas as you would driving a bigger car.

[Black Yaris]

Originally Posted by graywolf_14

The difference in using 89-91 instead of 87 on your yaris is nothing. Alot of high compression cars use higher octane like the svt focus. All turbo cars use higher octanes. But a 90hp car is not going to need it and u are spending just as much on that premium gas as you would driving a bigger car.

Originally Posted by captainzerocool

Running a higher octane than needed does no good. Same with running a lower than needed octane.

I get Sam's gas all the time and have had no problems.

we had this debate before, the Yaris can tell the difference between different octane fuels and adjust timing accordingly... higher octane fuel, with a light foot=better fuel ecconomy

[PetersRedYaris]

Sams Club fuel is actually descent quality, and they DON'T use ethanol, so that's good. However, 85 octane is too low; minimum octane rating for the Yaris is 87.