How to Change Oil Weight

Vehicle maintenance, like oil changes, can be done by the owner.

Owners of vehicles that are getting high in mileage--over 90,000 miles--or with vehicles in a location that experiences extremely cold winters may choose to change their vehicle's oil weight to prolong the life of the engine and improve protection of the vehicle. Changing the oil weight should wait until the next oil change, when the old oil is drained from the vehicle's engine, regardless of whether doing the oil change at home or at a service station.

Things You'll Need

• Vehicle's owner's manual
• Mechanic

Instructions

1. Consult the owner's manual for the specific vehicle. The last page usually shows the type of oil recommended by the manufacturer, including recommendations for changing to different oil in the winter or for high-mileage and the amount needed for each oil change. Consulting with a mechanic who usually services the vehicle will prove equally beneficial, particularly because the mechanic will know the region and typical weather and temperature patterns.

2. Turn the vehicle on and look at the dashboard behind the steering wheel where the various gauges are located. Locate the odometer, which keeps a record of the number of miles the vehicles has traveled in its lifetime. This will give an idea of whether the engine requires a high-mileage oil, for example if the odometer reads more than 90,000 miles. For vehicles with less than 90,000 miles that have been properly maintained with regular services, a standard weight year-round oil recommended by the manufacturer is acceptable.

3. Assess the region in which the vehicle is used for possible weather-related needs. If the winters are extremely cold--below -20 degrees--changing the oil in autumn, just before the winter, can help preserve the engine and keep the vehicle running smoothly. This can also reduce cold-related noises the vehicle may produce. Likewise, if the summers are excessively hot, switching to an oil that does not thin out as much when hot will help preserve the engine and keep the vehicle running well.

Tips & Warnings

• For vehicles that are well cared for and serviced regularly, changing the oil weight is less necessary until the engine starts getting old (well over 100,000 miles).

• If the vehicle has not been serviced regularly, it would be best to speak with a mechanic or automotive technician before making any major fluid changes.

References

• NAPA Locator: Quaker City Motor Parts