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Old 02-06-2018, 12:26 PM   #19
Submarinesonce
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Quote:
Originally Posted by guybo View Post
Since Lantana set a precedent, I'll necro bump this thread too.

When you guys run a tank of 91 every now and again, do you flash back to a 91 tune or just mix that tank with the old tank (not a complete fill up- like fill up when you have a half tank of E85 left)

I've switched to 100% e85...and I don't plan to switch back honestly.
However, don't mix fuels if you don't have a flex fuel kit. If you're on e85, and want to run a tank of 93, then run it all the way down, fill with 93, and flash the 93 tune.
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