* Better protection at high temperatures: Synthetic oil maintains its lubricating properties better at high temperatures than conventional oil, which is beneficial for engine longevity, especially given the age of your Expedition.
* Improved cold-weather starting: Synthetic oil flows more easily in cold temperatures, leading to easier starting and less wear during cold starts.
* Longer drain intervals: Synthetic oils typically last longer between changes than conventional oils, potentially saving you time and money in the long run. However, always follow the manufacturer's recommended oil change intervals or the recommendations on the synthetic oil you choose.
However, there are a few things to consider:
* Cost: Synthetic oil is generally more expensive than conventional oil.
* Potential leaks: In older engines, sometimes a switch to synthetic can reveal small leaks that weren't apparent with conventional oil because synthetic can be thinner and penetrate more easily. This isn't necessarily a bad thing - it highlights a pre-existing issue that might need addressing.
In short: Synthetic oil is likely a good upgrade for your 2000 Ford Expedition XLT, providing better protection and potentially extending the life of your engine. Just make sure you use the correct weight of oil as specified in your owner's manual. If you're unsure, consult a mechanic.
