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Old 04-29-2020, 12:42 PM   #12 (permalink)
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Originally Posted by redneck View Post

I forgot about that...

My bad...

Thing is higher octane does not necessarily increase economy.

In fact diesel increases economy In part due to more BTUs

If the op is truly only going for only max fuel economy she could do this

If that is done I would recommend mixing it with the 90efree, because modern diesel is lower sulphur than gas the emissions are lower as well.

Again would be an interesting experiment
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