Mudsport96
Full Access Member
If it is the LQ4 87 is fine. How many hundreds of thousands of 2500 and 3500 LQ4 trucks have been fed 87 for 20 years while towing far more than these rigs will ever see?
Plus gas to unleaded
- Thread starter Ventura139
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rockola1971
Full Access Member
Plus the Denali's. (K1500) They all come with 6.0L and the vast majority of them have LQ4's. I believe the Escalade came with the LQ9 only?
Mudsport96
Full Access Member
Yeah not sure what all got the LQ9 so couldn't comment on that. But yeah, unless you have the LQ9 i wouldnt waste the cash on premium... unless towing heavy. As a disclaimer i will say my dads 2500hd 6.0 saw a smidge better mpg towing on 93 than 87. I attributed it to the timing tables staying on the more aggressive side, thus helping mileage some. Im talking .7 to 1 mpg over 87. But unloaded it saw no difference at all.
If you are worried about octane i say get a flex tune and some bigger injectors and do e85.
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