the oil level in the engine of my 1992 toyota corolla 4 cylinders 1.6L efi dohc is...

It could be a bad pressure sending unit. It could be a loose wire to the sending unit. It may be a sludge collection restricting oil flow. It could be ( but maybe not till 300K miles) worn out crankshaft or connecting rod bearings, allowing oil pressure to be too low.
 
Back
Top