Ford Focus Forum, Ford Focus ST Forum - View Single Post - What octane fuel to use?
View Single Post
Old 10-30-2012, 10:04 AM   #12
Fan4Focus
Focus Jr. Enthusiast
 
Join Date: Sep 2012
Fan#: 104234
Location: smalltown, MN
What I Drive: 2001 White ZX3

Posts: 34
FF Reputation: 1 Fan4Focus Good Standing Member
Buy-Sell-Trade Rating: (0)
Yes, do the math and put in the E85 first, then top it off. Don't be concerned if you see a small drop in mileage on the first tank. The computer needs time to adjust for the different O2 level from the ethanol. Be patient and see what you get with the second tank at the same blend. I will definately say my Z-tec likes this blend! I saw better mileage and performance from the first tank with the blend. My son has a ZX3 also with the Z-tec and he is doing this too with the same results.
__________________
Fan4Focus
Fan4Focus is offline  
    Reply With Quote