Oil change on and off

[IndestructibleYaris]

You need to overfill the oil (within reason) or get a new oil pan with proper compartments to avoid oil starvation at strong maneuvers. If you only get this oil pressure light during hard braking with oil level full it's a badly designed oil pan/oil pickup. If you drive it like this too many times while oil light is on it may ruin the bearings on the crankshaft and explode the engine. Most likely will be fine because you're not straining the engine while braking but I would avoid triggering low oil pressure at all costs

Edit: this problem has nothing to do with engine condition, filter condition, or sludge. If so you would get oil light at idle in park and neutral or at stop with engine running in gear. If oil is picked up properly by pickup tube the oil pressure is up with no strain but high rpm and lower oil pressure occurs with high strain and low rpm. Oil pump speed increases linear with rpm and any fault in engine would be exacerbated with low rpm and high engine load/strain. His condition is above or at idle with minimal load and if he doesn't experience this oil pressure light at idle to take off (moving) it leads me to believe his engine/oil pump is healthy. If the oil was significantly lower than the acceptable range it was probably just very low on oil after a bad measure during oil change or oil consumption from PCV, worn piston rings, or worn valve stem seals. All of those problems are easy fixes. Replace pcv, engine restore for piston/cylinder walls, and seal restore additive in engine oil for valve stem seals.

[06YarisRS]

Originally Posted by IndestructibleYaris

You need to overfill the oil (within reason) or get a new oil pan with proper compartments to avoid oil starvation at strong maneuvers. If you only get this oil pressure light during hard braking with oil level full it's a badly designed oil pan/oil pickup. If you drive it like this too many times while oil light is on it may ruin the bearings on the crankshaft and explode the engine. Most likely will be fine because you're not straining the engine while braking but I would avoid triggering low oil pressure at all costs

Edit: this problem has nothing to do with engine condition, filter condition, or sludge. If so you would get oil light at idle in park and neutral or at stop with engine running in gear. If oil is picked up properly by pickup tube the oil pressure is up with no strain but high rpm and lower oil pressure occurs with high strain and low rpm. Oil pump speed increases linear with rpm and any fault in engine would be exacerbated with low rpm and high engine load/strain. His condition is above or at idle with minimal load and if he doesn't experience this oil pressure light at idle to take off (moving) it leads me to believe his engine/oil pump is healthy. If the oil was significantly lower than the acceptable range it was probably just very low on oil after a bad measure during oil change or oil consumption from PCV, worn piston rings, or worn valve stem seals. All of those problems are easy fixes. Replace pcv, engine restore for piston/cylinder walls, and seal restore additive in engine oil for valve stem seals.

What is "engine restore for piston/cylinder walls"?