OB Eng. Oil

Not trying to ignore proper maintenance on my engine but is it NECESSARY to use "only" Mercury 2 cycle oil in a Mercury. I have a 150 OptiMax. I remember years and years ago it seemed all Mercs then must use QuickSilver. If so, I gotta find a place near Bayou Vista that sells it by the bulk. thanx for any info here.

Use whatever brand you want.

Quicksilver and Mercury oil are the same. Most Walmarts and Academy's sell it. I try to stay with what the Manufacturer says to run and have never had an oil related problem.