I did not reset the OLM on my 5.3L engine after the past several oil changes. It went off approximately 8200 miles after it was reset. My Tahoe sees 85% Hwy and 15% City, but I also tow 150 miles/month with it. The hwy miles are 75+ MPH with the AC full blast. 8200 miles on dino seems excessive. I am glad that I change it more often. Any thoughts or comments on the OLM? Does anyone let their engine go this long on dino without changing it?