'88 XJ, Renix 4.0L (cat-less, CAI, 2.5" cat-back), ~ 175K miles.
We have E85 (85% ethanol/15% gasoline) on the pumps were I live (Oslo, Norway) at a very affordable price.
I figured I could try to run 50/50 E85 and low-grade gasoline. 93 and 95 octane are my choices, this it would equate to 89ish in terms of US octane rating #'s. During winter months the ethanol concentration is closer to 75 percent, so that would make the total octane number, like what, 100?
How does the 4.0 cope with ethanol? What kind of mixtures are safe to run? Do anyone actually have experience with it?
In case of oversized concentrations of ethanol, I assume the knock sensor is able to retard the ignition enough to avoid engine knock? Also, I don't think the rubber hoses going from the tank to the fuel lines, and the injector O-rings are going to suffer from this short-term? I assume the clean(er) combustion would help with "cleaning up" carbon build-up in combustion chambers and valves?
I'm probably gonna see a slight mileage and power loss along with lessened cold starting abilities, but the cost savings might make it worthwhile.
We have E85 (85% ethanol/15% gasoline) on the pumps were I live (Oslo, Norway) at a very affordable price.
I figured I could try to run 50/50 E85 and low-grade gasoline. 93 and 95 octane are my choices, this it would equate to 89ish in terms of US octane rating #'s. During winter months the ethanol concentration is closer to 75 percent, so that would make the total octane number, like what, 100?
How does the 4.0 cope with ethanol? What kind of mixtures are safe to run? Do anyone actually have experience with it?
In case of oversized concentrations of ethanol, I assume the knock sensor is able to retard the ignition enough to avoid engine knock? Also, I don't think the rubber hoses going from the tank to the fuel lines, and the injector O-rings are going to suffer from this short-term? I assume the clean(er) combustion would help with "cleaning up" carbon build-up in combustion chambers and valves?
I'm probably gonna see a slight mileage and power loss along with lessened cold starting abilities, but the cost savings might make it worthwhile.