Postby fat_frog » Sat Oct 31, 2009 8:40 am
2wd will do just fine w/ plain flat dirt roads, such as service roads, fire roads, shown in above posts. But, if the plain dirt roads are dry but very step, 4wd is likely to be required. But, if the plain dirt roads are wet and somewhat hilly...2wd will start to see some challenges. It is very difficult to describe what 2wd and 4wd can do in words. It is still not very easy to describe what 2wd and 4wd can do with pictures as they do not seem to do justice very well...especially incline/angle of hills.
I have 9,000+ miles on my '09; I have been using 87 w/o any pinging. My gas mileage is 18 ~ 19 w/ 30/70 (city/hwy). I will keep using 87 until pinging or something occurs.