You are completely skirting his Point. The manual calls for regular oil changes at 7.5K miles. If you mostly use E85 then the manual states that to be severe use and the 5K miles oil change is recommended.

Regardless of when you feel the oil needs changes the point is that in the manual if using E85 you have to change the oil more often. There has to be a reason for this, there has to be something building up in the oil and that something requires the oil to be changed sooner. You can directly infer that whatever it is, is bad for your engine.

 

How does one change the compression ratios on an engine without tearing apart?

 

I thought the whole point of E85 was that it is a renewable energy source produced her locally in the US, and over the long run, reduce the country's dependence on foreign oil. Grown and produced locally (in this country) equates to more jobs.

If the price of corn is going up, then wouldn't more farmers become interested in producing corn making the supply greater for food and fuel?

This country has the nation wide capicity to produce plenty of corn for both. In the long run, I think it is a good idea to produce and use. Of course I haven't done any research and all this is typed out without knowing any facts so forgive me if some of my opinions are misguided.

 

yeah, its renewable but we only have so much farm land and to dedicate that to producing just corn is a waist and will do nothing long term but drive up the price of food....... you can get by without oil but everyone NEEDS food. Also it takes LOTS of corn to produce a gallon of Ethanol, and it has a smaller amount of energy contained in it. Also now you have wheat fields being converted into corn fields which by the way corn is a horrible source of food as it contains very little vitamins and minerals where as wheat contains most of what we need to live off of...... the list goes on and on why I hate E85. E85 is nothing more than a gimmick shoved down our throats by the government and evironmentalists bent on controling the world markets. E85 can be used as a stepping stone to another source of energy but will NEVER be a solution to the issue. I say screw it all go to electric, more tq and cheaper.

 

^^^ every thing you said is right (to me) but u forgot some things to support yur point it actually takes 1.20-1.30 gallons of petrol to make one gallon of e85 and if all of the corn in the us was dedicated to e85 it would only make up for about 1/4 of the us's oil demands plus it is extremely expensive to make a pure ethanol it is next to impossible tomake e85 as efficient as gas

 

WRONG, E85 has less engergy than gas so it would take MORE e85 to have the same amount of energy. Also e85 can NEVER be as efficient as Gas because it cannot contain any more energy than it already has. e85 has this much energy 81800 btu/gal, GAS has 114000 btu/gal, and ETHANOL pure has 76000 btu/gal. Now I have given supporting data to my info.

 

did you not read the words next to impossible?

 

Next to impossible means that it could be possible however, it can NEVER be possible. Also you said that it would take 1.3 gal/gas to equal 1 gal/E85 that is incorrect.

 

you are correct...you cannot change the compression ratio of an engine without changing the pistons. e85 does not change the compression; the engine increases TIMING after it senses e85 present. the engine can increase the timing due to the high octane rating of e85 and this produces more hp/tq

 

what i meant by the 1.3 gal i meant it takes that much gas to make a gallon of e85 with harvest, transport ect and maybe in the future they might find a method that can make a good ethanol mixture im just trying to stay open minded here