I drive my work truck, a 2005 Silverado for work Monday to Friday, sometimes weekends too (lots of overtime lately). I work for a land surveyor, doing construction layout. A lot of local city driving, but lately I've been driving a lot of longer distances, often 80 miles a day. Oil changes used to be cheap bulk conventional every 3k at 4-6 months, I bought the truck from my employer a couple months ago so I'm responsible for everything on it now. Now it's full synthetic high mileage (bad valve seals - occasionally smokes on startup in the summer and some oil deposits on the spark plugs), doing one early oil change before I start going by the olm (seems to want an oil change every 4k miles roughly). It uses a qt in 2500 miles.
Originally Posted by Speak2Mountain
bc you drive for work or just like to drive......what is your OCI regimen and what are you using, motor oil-wise and are you considering changing OCI's and oil wt or brand?