93 octane vs 90 ethanol free?

[blckblt]

Not looking to start a debate on if 93 (what ever the highest grade of gas is in your area) vs 87.  I have the 6.2 and I have some local stations with 93 so I use that when possible otherwise 91 (in my previous RAM I used either 93 or 91 for 4 years so I am used to the extra cost).

 

There is a station in town that also sells 90 octane but is ethanol free.  Just looking for thoughts between 93/91 with up to 10% ethanol (I think that is the amount) and 90 that is ethanol free. 

 

On a side note I previously tried the 90 eth free in my RAM and that truck did not like that gas (typically would not start on the first try on a cold start)....

[steve841]

Yeah ... I'd stick to 93.  I'd mix mid grade with premium from time to time. 

 

My last 6.2 ran fine on 87.  The 19 did not like it at all.

[AlaskaErik]

All we have in my area is 90 octane ethanol-free premium.  Can't get anything with ethanol in it.  My 6.2 seems to run just fine on it.