Engine oil plays an important role in lubricating the engine components while the engine is running. It helps prevent rust and extends the lifespan of the engine. Regularly checking the engine oil and observing any changes in its color can help keep your engine running for as long as possible.
- Transparent Yellow: Indicates that the engine oil is clean. However, this can depend on the age of the vehicle and certain additives that may darken the oil more quickly. Good-quality oil can help absorb combustion residues within the engine effectively.
- Black: A sign that it’s time to change the engine oil. This occurs when the engine has been running for a long time, leading to sludge and dirt buildup that can clog the fuel system or introduce contaminants into the engine.
- Brown or Gray: This color indicates that the engine oil may be contaminated due to a coolant leak or if the engine has been idling without sufficient temperature, which often happens in infrequently used engines.
- Rusty Color: A rusty appearance suggests that the vehicle has been in a high-humidity environment, leading to condensation and rust on the metal dipstick. This can result in rusty oil when checking the engine oil, typically seen in older vehicles.”
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