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e30-e50 Q&A

prove_it

Well-known member
Joined
Jul 3, 2008
Messages
4,201
Location
Sioux Falls, SD
Well the time has finally come and around here we now have blender pumps and steady E-30 pumps. I've been trying to find out what the octane levels are for the various blends of ethanol and gas. I am thinking E30 should be around the 91-95 mark, does that seem logical or is it lower? Also would a 30% blend yield performance advantages or be as good as a good 93 octane 10% blend. Currently I'm paying 2.95 a gal for 93 octane and E-30 is 2.20 a gal.
 

curtis

Well-known member
Joined
May 4, 2003
Messages
11,892
Location
Clarksville TN
go read this ....the turbobuick guys are always up on this stuff. They were mixing toluene and xylene before these cars were built.
 

I had one customer playing with E30 and it ran pretty good. He was doing 25psi+. You do need to add ~5% more fuel for every 10% more ethanol added though.
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