Hey guys,

I don't have e85 available locally. BUT I have a place to get pure ethanol and some 93oct gas.

Can I just mix 85% ethanol with 15% 93oct fuel to get proper e85?


Thanks!

 

Yes you should be able to mix it! Just buy a cheap tester and check and make sure you have 85% ethanol. Then you can take notes as to how many gallons of each you need in order to make the same % every time

 

Need to be careful of the additive packages in the base fuel. This is where some blender stations may get themselves into trouble resulting in "gunk" or "goo" in fuel systems, intakes, injectors etc.

From http://www.google.com.au/url?sa=t&rc...73231344,d.dGc


Some fuel additives commonly used in petroleum, such as drag reducing agents (DRA) used to increase pipeline flow rates, may not be soluble in ethanol. There have been instances in the past where denaturants containing DRA have caused filter plugging at plants, although no problems were experienced at the retail or consumer vehicle level. Producers should be sure that denaturant suppliers provide suitable documentation that unacceptable quantities or insoluble fuel additives like DRA are not present in their product.

and this http://papers.sae.org/2010-01-1464/

 

Also make sure your "pure" ethanol isn't 10% water or something.

 

Thank you guys for your replies!

Will try to mix!

 

just run 100% ethanol WIN!

 

What is the pure ethanol costing you per gallon?

 

+1 on running straight ethanol

E100>E85

 

Concern about safety with E100 in relation to visibility of flames if there is a fire?

I've done some testing with E70 and once the gasoline burns off and the ethanol continues to burn the flame is completely invisible.

Does your E100 burn with a visible flame in daylight?

 

I had some experience with pure ethanol. If you choose a wrong one (in my case it was food grade) it will be extremely corrosive and adding fuel would not help. And you can't really check without lab which one is right. I had to use my lab and chemist to do all research and testings and found that all food grade one doesn't work in my region, because food grade production technology is using a lot of salts - 300x more than a E100 limit. It was killing my fuel level sensors every week, injectors which were full stainless steel ID1300 ethanol compatible started to act weird, fuel temperature sensor rusted to the holes, it ate 2 AEM ethanol compatible pumps.

Try anhydrous ethanol at least. The one without water (99.6% one) - it was fitting standards in most samples. But most sellers don't know which one they have. So expect possible troubles on the way. Or find a lab and test ethanol for ASTM ethanol fuel standards compliance at least.

Btw, for me ethanol cost per kWh is same as premium gasoline...