I have a south African Microbus that came with 2.5L 5 Cylinder Audi Engine(Petrol). I am currently in the process of rebuilding the engine since it has over 200000kms on it. It was starting to blow smoke and have low oil pressure. I presume the bearings etc had run their course. I do however have a question in regard to parts replacement. I have currently purchased every imaginable part for this engine in order to have a complete engine rebuild offering many more years of service. However , all that is left is the oil pump. My question is , is there any replacement interval for the oil pumps in these engines? Should i bother replacing it now that i am rebuilding the engine or should i leave it alone since some claim it lasts as long as the engine(a lifetime).
I'm targeting a hastle free engine for many years since i am also switching to EFI from the CIS that came with these engines.
Thank you in advance for your responses.