hello i checked the oil pressure on my 05 corolla basically have about 4 psi rev engine and still about 4 - 6 psi. this engine was a victom of heavy sludge oil strainer was completely plugged cleaned all the sludge car runs beautiful but oil light stays on. where should i go from here do i remove oil pump and check or am i wasting my time engine rebuild?? not trying to be repetive on my question i could not find other question i had asked earlier thanks

I answered you. But oh well, I will repeat it. Yes. What's up, been neglecting oil changes? And a good filter? But no finger wagging at you...just take pump OUT and soak it in solvent overnight. Or buy a new one. It's critical Then go to a very light oil for a few thousand miles. Like 2-3k and change oil and filter again. The use 5W30 for another 3k and change again. And use a good filter, No Fram. NAPA has some good ones, ask the guy. Wix. Mobil1. Consider synthetic oil, but it's not absolutely necessary Then do that as many times as necessary to get clean oil. Then do NOT put any additives in you engine. Modern motor oil, conventional or synthetic, has everything it needs. Nothing you can add will help. Only make it worse