Yes, but it takes a long time - you basically have to let the oil "wick up" and flow down a rope in a clean environment. See the link provided for more information.
Remove the oil pan from the engine and clean it with kerosene.
In an engine, the oil filter, but only for a limited time.
Assuming you mean oil pump, changing the engine oil and oil filter on a regular basis with quality motor oil will help keep the internal engine parts as clean as possible.
Oil contains detergents that clean your engine and suspend soot, deposits, & dirt in the oil. The air and oil filters remove most of the larger particles but some get in the engine and stay suspended in the oil which causes it to turn black. Oil is not only a lubricant and helps cool the engine, but it also keeps the engine clean.
air filters clean the dirt while oil filters strain the used oil eliminating the tiny metal shavings from the engine
Used oil can be oil used as a lubricant in something other than an engine. But in reality they are both the same thing. Oil that has been previously used and drained from equipment or an engine.
Oil that has been removed from an internal combustion engine after being used as a lubricant in that engine.
because it is only called motor oil by morons who don't know the true difference between a motor and a engine your right it should never be called motor oil unless it is a dc motor that has oil in it but for a engine ran auto it is engine oil
oil can be used to ludricate engine parts to avoid wear and knocking of engine.
You might have to much oil in the engine. Check oil. Clean spark plugs. (remove and use sand paper to clean)
if your grout had not been seal then it will be hard to clean and if you clean with acid the grout will be change color.
Not far, anyway. The engine flush is not engine oil ... its only purpose is to, hopefully, clean the inside of the engine areas. That's why it's called "Engine Flush" and not "Engine Oil". Get it out and put the new oil in soon.