[lo bux racer]

I run the cheapest 87 I can find, and it works just fine. I get 26 mpg around town and almost 30 mpg on drives to the City (all freeway, 100 miles each way). There is no good reason to use more octane than you need, it just lightens your wallet.

The only caveat is, it is prudent to run an injector cleaner like Chevron Pro-Gard or Clean-Up, Red Line SI-1, or BG44K every 5 - 10k miles. I typically use Chevron, but have used both the Red Line and the BG products. BG is the most expensive at about $16 per dose. Chevron and Red Line are about $7 a dose and are widely available.

 

[lo bux racer]

Originally posted by Zygote55@Feb 22 2005, 04:15 PM
Why not just use chevron 87 instead of the additives in cheap gas?

Just curious....

It's 8 - 11 cents a gallon more expensive. I make up the $7 for the cleaner in 2100 miles, so I get 2900 miles free. Simple economics from my perspective.

 

[lo bux racer]

Originally posted by ZEROmotorsports@Feb 22 2005, 06:21 PM
while unnecessary, higher octane will NOT hurt your car or your performance

Ford says using anything greater than 87 octane in their standard trucks will void the warranty. I don't know why this is, but that's what they say. Toyco doesn't say this.

I have seen guys dyno with extremely high octane fuels when they didn't need it (117 when 105 or 107 would have been fine) and actually lose power, but I doubt there is any difference in performance between unleaded pump fuels.

 

[lo bux racer]

I think it would be hard to do with the tools typically available to a dealership, but there's always a way to find things out. Social engineering is a great tool for learning things you wouldn't otherwise get people to talk about.