UPDATE:
Called the shop that did the oil change. They said they did not have an oil pressure gauge. Called the garage I prefer for service, said they would hook car up to computer to run diagnostic. Did not seem to understand or have oil pressure gauge, would cost ~1 hour labor.
Did not test oil pressure.
Have driving about 12 miles since original post: no odd startup, no extended warm up period, no burning oil smell, no noise or knocking during operation. Everything seems to be normal. Except for the warning light.
Found this:
http://www.autozone.com/autozone/par...715958_0_8537_
If I replace that part (if it's the correct one) am I at least figuring out whether or not +1 is my problem?
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