How long to go between washes?

[HUMMERcustoms.com/TAZ]

Jonahs
I know You are correct for sure. I'm going to run a tank through it and see how it holds up. I did notice though that when i was in perf. mode avg. MPG would adjust up and down alot more slowly like fuel usage was more stable even though lower MPG. IN the econo mode it goes up and down real fast. It will swing from 10 to as high as 17 while out on the ride last night and occasionally 20. It flucuated like it was really adding and cutting fuel more agressively depending on the condition. Hill, flat, hard acc., and slow acc. It was wierd. I know I just do not like the shift action in this mode.
I'll run there for a couple weeks just out of curiosity if the shifting doesn't get to Me to soon. If I can stand it.
TAZ


<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by LasVegas:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Jonahs that economy is doing something as i cleared avg. MPG and by the time i got back from an hour drive includig freeway, redlights, etc. I pulled in garage with 14.3 avg. MPG </div></BLOCKQUOTE>

Awww come on TAZ. That just isn't long enough to get a solid MPG average. The few times I've reset mine it has always gone up....for a while. But if it stays there you've found the Holy Grail of H2s. </div></BLOCKQUOTE>