I just perused the UOA forum and realized that about 99% of all the posts had OCIs of less then 7500 miles, most under 5000 miles. This board is educational and it appears that most participants are here to not only get the best protection for their engines but save the environment and create less hassle and work for themselves in the long run. Yet, 99% of the participants cannot seem to break the 3000-5000 mile OCI habit. They just don't seem to trust the numbers being posted. Why bother to purchase a high cost synthetic and then change it out at 5000 miles. We know (shown countless times on the UOA board) a good dino will easily go 3000-5000 so why waste the money. Just seems like a huge contradiction to participate on this baord yet not have it influence the OCIs that one is using. Old habits and beliefs truly are hard to change. However, it also appears that 99% of us are willing to go with Auto-RX, based upon the participants opinions on this board (which in theory is riskier then a longer OCI as it is an additive basically only promoted on this site)yet these same participants will not extend the OCI on their engines. I just do not understand!