02/05/2024 por Ricardo
O óleo é o sangue vital de qualquer motor e, sem ele, a funcionalidade, a proteção e o desempenho são impossíveis. Um óleo de alta qualidade flui pelo motor. O óleo do motor garante que as peças móveis se movam livremente, sem atrito entre si. Ele também protege as peças contra agentes corrosivos, como a ferrugem, além de coletar partículas indesejadas geradas pela combustão e filtrá-las para o cárter, onde não causam danos. Por fim, o óleo do motor ajuda a resfriá-lo, evitando o superaquecimento.
Sem lubrificação adequada, os componentes se atritam uns contra os outros, causando danos e gerando calor excessivo. O desempenho do motor também é afetado negativamente, resultando em baixo consumo de combustível e maiores custos de manutenção. Sem a proteção do óleo, os sistemas do motor ficam obstruídos com detritos e as peças metálicas tornam-se suscetíveis à ferrugem, o que pode torná-las quebradiças e inseguras para uso.
Consequentemente, ficar sem óleo de motor é uma eventualidade que deve ser evitada a todo custo. Comprar um estoque de óleo de motor apenas para descobrir que ele se deteriorou e se tornou inferior ou inutilizável com o tempo é um desperdício de dinheiro, portanto, é importante responder à pergunta: "O óleo de motor tem prazo de validade?" antes de comprar em grandes quantidades.
Entendendo o prazo de validade do óleo do motor
Engine oil shelf life at a glance
- Unopened containers: Around 3–5 years
- Opened containers: Around 1–2 years
- Oil in an engine: Follow the manufacturer’s service interval
How long does unopened engine oil last?
In simple terms, the shelf life of standard motor engine oil is typically up to five years.
These built-for-purpose oils are not a product that will go bad in a matter of months. However, it’s next to impossible to accurately predict just how long engine oil shelf life is. The reason for this is that petroleum stability, which refers to how effectively it can resist change to its unique properties, depends on specific circumstances. Mainly, this involves how much exposure oil incurs to factors that can speed degradation.
What affects the shelf life of engine oil?
Petroleum-based products deteriorate due to chemical reactions that begin every time that they are exposed to like air, light, water, and oxygen. As a result, how well you store engine oil has a powerful influence on the product’s shelf life. Accounting for such considerations, exposure can reduce the lifespan of the engine oil from five years to two years.
How should engine oil be stored?
As a rule, storing engine oil where it won’t face exposure to high heats for extended periods and ensuring it’s correctly sealed so it’s not exposed constantly to air or is at risk of developing condensation will see its shelf life extend considerably.
How can you tell if engine oil has gone bad?
If you are unsure how old engine oil in your garage is, a visual examination will update your understanding. Pour some oil from the container into a vessel so you can study it.
Fresh engine oil is usually pale brown in colour. If the engine oil is substantially darkened, it has likely oxidised. However, if the oil is milky in appearance, it has probably been contaminated by water. Look for signs of settling, a hazy appearance or for signs of particulates present. If your examination uncovers any of these issues, the engine oil is not fit for use.
Quanto tempo dura o óleo do motor em um veículo?
Outra dúvida frequente entre motoristas e operadores de veículos é a durabilidade do óleo do motor em seus carros, caminhões ou vans. A vida útil do óleo em veículos depende de circunstâncias específicas, mas está mais relacionada às condições de direção do que às práticas de armazenamento.
What affects how long engine oil lasts?
Driving conditions are considered the key determiner when it comes to the active service lifespan of onboard engine oil. The reason for this is that how long an engine oil lasts is directly connected to how swiftly its additives are depleted.
How do engine oil additives affect its lifespan?
In its most basic form, an engine oil is composed of a base oil and an additive package. The base oil is virtually unlimited in terms of lifespan compared to the additives it contains designed to enhance and protect the engine and its operation. These detergents, acid neutralisers, and dispersants get consumed as vehicles are driven and they perform their role inside the engine.
How do I know when to change my engine oil?
After its additives become depleted, the engine oil can no longer provide proper protection for the engine, making an oil change absolutely necessary.
There are two ways to check when it’s time to change your vehicle’s engine oil. The first is to consult your vehicle handbook where your automaker will have listed the ideal oil change interval for your make and model. Under normal driving conditions this is typically around every 7,000 miles but when vehicles are used in severe driving conditions, this drops to every 5,000 miles.
The alternative option is to do a visual test of the oil in your vehicle by taking a sample and examining it as described above.
Por fim, evite comprar óleo em excesso e armazene-o de forma segura e correta. Mantenha seu estoque organizado e com a data de validade para garantir que você use primeiro o óleo de motor mais antigo e evite desperdícios.
Need fresh engine oil? Browse our range of engine oils from leading brands, or contact our team for help choosing the right product for your vehicle.
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Qual a diferença entre óleo de motor e óleo de compressor?
Embora o óleo de motor e o óleo de compressor sejam ambos lubrificantes que normalmente envolvem uma mistura de óleo base (sintético ou mineral) e aditivos, são produtos diferentes com finalidades específicas.
Que tipo de óleo se usa em um motor a diesel?
Os motores a diesel só funcionam corretamente com o óleo de motor adequado.