6.0 what grade fuel

[95escahoe]

Picking up an 04 Escalade with the 6.0 V8, what is the correct grade fuel to run? Some people say 87 is fine, then others say it runs like crap, just want to run what's best for it


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[ccapehartusarmyINF.(ret)]

what does the fuel guage say or the manual

 

[95escahoe]

what does the fuel guage say or the manual

There is nothing on the cluster that I noticed when I test drove it, and no manual need to pick one up off EBay


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[adventurenali92]

I run 91 in my 2006 Denali with the 6.0. Runs alot better than it did on 87. More expensive but worth the extra expense in my opinion.

 

[ccapehartusarmyINF.(ret)]

I run 91 in my 2006 Denali with the 6.0. Runs alot better than it did on 87. More expensive but worth the extra expense in my opinion.

thats called the placibo effect i used to get it to along time ago till i learned what the octane rating actually meant and when i was changing duty station from ft hood to ft lewis
i got a fresh oilchange and filled it up with super unleaded and man i was gettin like 400 miles to a tank i though that was awsome and just to see if it was infact the superunleaded i ranalmost ddry then filled up with 87 and hit the road again and by goly i got the same gas mileage around 400 miles to the tank

 

[jough]

Cadillacs use the LQ9 6.0 **. They require premium. Yes, the knock sensors will scale back the timing advance on 87 octane to a degree.
If you get a tune, Black Bear says to use 93. I can perceive a difference in performance between 91 & 93.

 

[95escahoe]

Cadillacs use the LQ9 6.0 **. They require premium. Yes, the knock sensors will scale back the timing advance on 87 octane to a degree.
If you get a tune, Black Bear says to use 93. I can perceive a difference in performance between 91 & 93.

Thanks picked up an owners manual off EBay and that's what it says, been running 93 going to get a BB tune down the road, does anywhere in the USA sell 91? Only 87, 89 and 93 here


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[chevync]

When I bought my 03 escalade back in November I ran a test filling up each time with different grades. I tried 93, 89 and 87. I got better mpg out of 87. I've put close to 5k miles on it running 87 with no problems.

 

[95escahoe]

When I bought my 03 escalade back in November I ran a test filling up each time with different grades. I tried 93, 89 and 87. I got better mpg out of 87. I've put close to 5k miles on it running 87 with no problems.

With the 6.0?


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[chevync]

Yes 6.0 Awd.