What are the main reasons behind excessive oil consumption in Toyota Prius?

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What are the main reasons behind excessive oil consumption in Toyota Prius?

Many Prius owners in Pakistan report increased oil consumption, especially in older models. What could be the primary reasons behind this issue? Is it due to engine wear, oil quality, o r improper maintenance?

Lubaba asked on 14 Feb 2025 11:36:57 am

1 Answer

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Car Mechanic Expert - on 14 Feb 2025 11:43:51 am

Several factors contribute to excessive oil consumption in the Toyota Prius, particularly in older models. The primary reasons include:

Engine wear: As Prius engines age, components like piston rings, valve seals, and the cylinder walls can wear out, leading to increased oil consumption. The engine loses its ability to retain oil, causing it to burn more than usual.
Oil quality: Low-quality o r incorrect oil grade can exacerbate oil consumption. Using a lower viscosity o r non-recommended oil grade can result in increased friction and faster oil burning.
Improper maintenance: Neglecting regular oil changes o r not using the recommended oil can contribute to poor engine performance, accelerating wear and oil consumption. Regular oil monitoring is crucial for early detection of issues.