Don't, just drive it. Like my previous posts ... Most people just don't normally take the time to scrutinize the oil coming out of the pan, likewise ... This thread would blow up if people did. Yours looks a touch concerning to me, but it no noise, no smoke, good oil psi (checked with a mechanical gauge), and a compression test all check out good ... Drive it and stop worrying, nothing you can do to stop it (my opinion, you're one of the few that looks at this stuff). Unless you want to pull engine and spend 4-6k dollars (us).