I would like to know what the effects on an oil pump are when oil is changed.
Obviously after changing the oil filter the engine will run dry without oil pressure for the first few seconds while oil is sucked up past the non-return valve.
I know that for the engine itself this is not a huge deal as todays oils are magnetic and stick to things, but what effect does this have on an oil pump?
Does it degrade its performance in anyway? Or is the oil pump "tougher" than the engine. What I mean by excessive is every 3000 miles. To some people this is common and perfectly acceptable but I am curious to how the oil pump is affected.