How long since last change? If it's 2500 miles in a year, I'd say change it. It it's 2500 miles in a few months I'd just top it up.Q. I was looking to change the oil but its like a really weak cup of tea and only done 2500 miles since the last change. Best to top it up or replace?
Even with premium oil, an oil change is relatively cheap in the overall scheme of things. And you have the peace of mind of knowing that you've done it properly.