Howdy! I have an 05 suburban I just started going through. It has 300,000 and low oil pressure. I’ve dropped the pan for the o-ring replacement. It wasn’t terrible in there but the old one is definitely hard and flattened. I may put a pump in while it’s apart. Anyways, nice to be on board!

 

Welcome from Florida. Change the pump while it is apart rather than have to do it again later.

 

Welcome from WA!!

 

I am planning to do exactly that. I am looking at the Melling high volume pump on Rockauto. That seem to be a good choice for an engine with just over 300K, or is there another one I need to look at?

 

That is a good pump for your needs.

 

Welcome to the forum.

 

You're tackling the common oil pressure issue head-on, great call replacing the o-ring and possibly the pump. With 300k, it’s worth the effort. Good luck, and welcome aboard.