Yes they do. All engines are required to have oil changes at regular intervals, depending on the type of engine.
Cars don't move without engines.
If both engines are a 2.0. You may have to do some minor changes but the engines are the same.
Yes, the pistonless rotary Wankel engine.
Yes, injected engines do not use a traditional carburetor. EFI gas engines do not have a carburetor, and diesel engines do not use a carburetor.
With no engines you can't. Engines provide power and thurst as well as cabin pressure. The APU is a back up generator and can provide power when engines are lost.
Heat engines like your lawn mover or car a combustion engine.
Car engines way back work the same as they do now with very minor changes.
Neither of those companies make their own engines. Most engines will changes from one mower to another with minor adjustments as long as they are the same type engine. If they are both the same size and make engines then there should be no trouble.
The only engines that will fit in this car without significant modification to the car are the stock engine (6g72) or the Mitsubishi 3.5L 6g74.
Reciprocating engines (piston engines) are internal combustion engines. Rotary engines ( Wankel engine) is also an internal combustion engine. In general, all types of engines in which the combustion chamber is an integrating part of the engine is considered a internal combustion engine.
yes most current engines are interference engines