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MikesA1A2FU

E-85 blending

On Marks lead I have been experimenting with e-85 the in the Saab.  I started out @ a 25% blend E85 and fossil 93.  I did not notice and appreciable gains or losses in economy or performance.  Engine ran well avg about 26.7 mgp in mixed driving.  I bumped up to a 50/50 blend last fill up and so far so good 1/2 tank driven so far and I have noticed the car has a little more get up and go, but fuel econmy has dipped a little 25.9 mpg.  I cannot get on it too hard as i still have to replace  the rear motor mount and down pipe ( next weeks project)  PDT_Aliboronz_01
stuston

I understand the biggest problem with switching is the acidity of the Ethanol, causing corrosion, and that it will dissolve deposits in the fuel system, possibly cloging them in injectors and such.
MikesA1A2FU

stuston wrote:
I understand the biggest problem with switching is the acidity of the Ethanol, causing corrosion, and that it will dissolve deposits in the fuel system, possibly cloging them in injectors and such.


With that in mind many of the guys on the Saab forums have been using e-85 for 3 & 5 years without issue. The consensus has been not to exceed a 50/50 mix and to use an occasional bottle of dry gas.  In the northern states they will go as far as running a 65/35 mixture in the winter as there is more gas in ethanol, than summer months.
fxgolf

another downside to ethanol is you have to burn more.  you can make good power on the stuff you just have to adjust fueling (i.e. bigger injectors, fuel curve, and new cat and O2) to run it full out.  and don't forget it takes almost three times as much ethanol as it would mo-gas.  that is why you have to run bigger injectors cause you have to flow a shit ton of fuel to get the power.  i always notice a drop in fuel economy when i run stuff with ethonol in it.  thank god the base is still pure.  PDT_Aliboronz_15
dragonfli_x

i brought up the eth thing since I've tried it and felt noticeable difference in power - as well as more gas being used, but ethanols equiv is over 100oct... acidity is an issue if running pure 100% eth, but all cars, flex or not, should be able to withstand at least 30% without fail... but you can put 50% if you want... I grabbed this lil tid bit from the GTO forums and people messing with eth mixes and making some super mad hp with just some tuning and gas mix... it can't be all bad if it's working for the Austailian vehicles Smilie_PDT - this led me to try it... the engine loved it, but my MAF sensor... mmmm :( not so much.

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