Oil light on under 1000Rpm?

What is your question?

Recently had water pump go out. Had pump and timing chain both replaced by a shop mechanic. Car NEVER overheated. A week after picking car up oil light came on flashing constantly. Noticed oil was paper thin (due to water breaking down). Added Lucas H.D stabilizer. Helped, now oil light only comes on under 12k - 1k rmp. Could the water have made my oil pump go out? Or maybe just need a new sending unit? Have now dosed with motor honey Hoping to thicken oil more bc the Lucas didn't get it done enough. I know I need a oil change with thicker oil but until payday I have t drive to work still. Help? Any ideas?

What makes this problem better or worse?

Better when cold

How long has your 2008 Dodge Charger had this problem?

Roughly a week