Ok my daily driver is a 1993 Suburban 3/4 ton 4x4. It has 293,000 miles. My oil pressure is fine when I start it but after about 10 minutes it runs very low. I am going to replace the pump simply because, even though it might not be the main problem, I know it probably needs it anyway. Any suggestions would be great. Do I just need to remove the oil pan, or is there more to it? Thanks
