Oil pressure

There are a number of things that will cause this, so we need to start with the basics. Here is a guide that will get us started:

https://www.2carpros.com/articles/high-or-low-engine-oil-pressure

The most likely cause of this is a restriction on the pick-up screen which is most likely sludge.

So, if that is the case, we need to change the oil and add one of the engine flush additives to see if we can improve this. Basically, you add this and then change the oil again after 1,000 miles.

https://www.2carpros.com/articles/how-to-change-engine-oil-and-filter

The next likely things is the oil pump is failing, or the engine is worn out and the tolerances in the bearings is too large to create the needed pressure.

However, let's start with this info because if the oil pump is failing or the engine is worn out then that is a more serious condition.

Let me know what questions you have.

Thanks