Yes
yes.
Yes, you can mix them.
1 quart and a half
it will hold about a half quart of oil
it wont hurt, the excess oil will eventually burn off
The 2001 Toyota Corolla engine oil capacity is 4.5 quarts of motor oil. For quarts of oil will go into the engine and one half quart of oil will be in the oil filter.
Four quarts give or take about half a quart, if it has Vtec it will take a little more oil about quarter to half a quart depending on the size of the engine. 1.8L B18B1
I would drain off a qt if it was me. You don't want the rotating assembly making contact with the level of oil because it will whip the oil into a froth reducing the oil's ability to lubricate properly.
The 2004 Toyota V-6 engine oil capacity is 4.5 quarts. 4.0 quarts will go into the engine and one half quart will go into the oil filter.
Bad very very bad.... engine will get too much oil and overheat and go boom... lots of smoke...
No. If you only remove the filter about a half quart will come out.
Your really should never put more oil then needed into anything no extra oil will not cause water to get in you obviously have a bad seal somewhere below the water line