6.2 And Premium Fuel

[BlackZ71Silverado]

I got one? For the first 3 days with my 6.0 I ran 87. K know 91 is recommended. Could that have hurt anything or contributed to my misfire code?

 

Is running 85 in high altitudes good for an engine requiring 87 at sea level? I did that for a few weeks in Utah with the 4.8

 

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I know with my L76 Vortec Max engine, premium is NOT recommended like it is for the 6.2L.....Pretty sure it's not recommended for any of the 6.0L engines sao you should be alright, I THINK.

[Chris]

On Silveradoss.com, you would have thought I insulted their mothers when I said I was running regular in an LQ9. I think my compression is 10:1. My tuner also told me to run premium

 

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[BlackZ71Silverado]

On Silveradoss.com, you would have thought I insulted their mothers when I said I was running regular in an LQ9. I think my compression is 10:1. My tuner also told me to run premium

 

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Then he must have tuned it for Premium 91-93 fuel.

[Chris]

To pull 325 at the wheels that timing has to be advanced quite a bit. He got that number on 87, but told me to immediately fill with premium

 

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