Premium w/10% ethanol or mid-grade ethanol free?

[jhmover]

Low octane will foul O2 sensors long term. Just sayin.

Like the very long term. I have 313,000 miles on mine and just finally replaced the front 2. Runs almost exclusively on regular.

 

[KyleT]

Low octane will foul O2 sensors long term. Just sayin.

nope. wrong.

 

[rover4x4]

Like the very long term. I have 313,000 miles on mine and just finally replaced the front 2. Runs almost exclusively on regular.

313k on the O2 sensors?

 

[leeawalden]

don't run an outboard with ethanol fuel...hard on mowers and small engines too. Premium in the 04, but I don't drive it daily so it gets gas once a month MAYBE so an extra 5 ain't bustin my balls.

the silverado gets the cheapest shit I can find.

The fastback gets ethanol free premium from sunoco with lead additive and octane booster

 

[JohnB]

Just sayin.

Just sayin? What?