Sputtering at 3,000 rpm instead of shifting and occasional loss of power

Hello, yes, low oil level will cause performance issues. But it sounds like some other concern. I would check into engine performance and make sure compression and timing is good. Low oil level over a period of time will cause internal engine issues, and power and performance and engine timing concerns. I'm wondering about the transmission's performance also - worth having checked. Seek local guidance at a shop near you for hands on testing. www.repairpal.com/repair-shops