I'm curious some people say change oil every 3k miles, 6k, 10k and some even every 20k.
What seams best for the engine and give the best protection would be the shortest interval 3k however I understand what after an oil and filter change when the vehicle is started it runs without lubrication until oil is sucked up through the new filter passed the anti-drain back valve.
How much damage does this actually cause? it must feel like a mini heart attack on the engine.
I don't really know how wear can be measured in this way so put it this way, by changing the oil and running without lubrication for a brief few seconds how many miles would be taken from the engines life? 10miles 100miles, etc.
Thank you all for your time look forward to seeing your opinions.