Oil Weight:
* High Mileage Engines: Generally benefit from thicker oil, like 10W-40 or even 20W-50. These oils provide better protection against wear and tear, especially for engines with worn seals and gaskets.
* Modern Engines: Typically use thinner oils, like 0W-20, 5W-20, or 5W-30. These oils reduce friction, improving fuel economy and emissions.
Oil Type:
* High Mileage Specific Oils: These oils contain additives that help seal leaks, reduce oil consumption, and protect against wear.
* Synthetic Oil: Can be a good choice for high mileage engines, as it offers better protection and lasts longer than conventional oil. However, it may not be necessary for all vehicles.
Factors to Consider:
* Vehicle Manufacturer Recommendations: Always consult your owner's manual for the recommended oil type and weight for your specific vehicle.
* Driving Conditions: If you drive in extreme heat or cold, you may need a different oil weight.
* Engine Condition: If your engine has significant wear, a thicker oil may be beneficial. However, if your engine is in good condition, a thinner oil may be better.
Recommendation:
* Consult your owner's manual first.
* Consider a high-mileage specific oil.
* Use a synthetic oil if your engine is in good condition.
* Avoid using too thick of an oil, as it can increase friction and reduce fuel economy.
It's always best to consult a qualified mechanic or your vehicle's owner's manual for specific recommendations.
