He is right! Running a warm engine under load uses far less fuel and causes far less wear than running a cold engine under load.
This is why fire engines and other emergency vehicles often use engine preheater systems that keep the engine coolant at operating temperature (or close to it).
Also, you will use far less fuel in your first few miles of driving. That will more than make up for the fuel used warming up the engine (provided you aren't warming the engine for hours!).
As the earlier poster explained, warming up your engine means you'll use less fuel in total. That means less pollution, not more.
Engine oil works best when warm up to operating temperature. Also a cool down period is also recommended. If you just got off the freeway, drive around slowly for about 10 minutes to bring engine temperature down. This even more critical you have (or have added) a turbocharger. The shaft bearing on the turbo mostly uses engine oil to survive the brtual exhaust temperatures during boost. If the engine is prematurely shutdown while the turbo housing is still hot, the oil can coke in the shaft bearings. This is why performance auto stores sell turbo timers. A turbo timer lets you remove you remove your key from the ignition and the engine will continue to run for a few minutes, so the oil pump can do its work to cool the turbocharger.
mainly leaving your lights on when the engine is of or leaving the keys in the ignition
If the engine is running and the alternator is good. If the engine is not running, no.
If the engine is running, then no. The alternator constantly keeps the battery charged.
A good rule of thumb is that it takes as much gas to start your car as it does for the car to run for 3 minutes, in addition your engine takes the most damage from being started as opposed to running continuously. So you should make sure that you're going to be staying where you are for awhile (probably about 5 minutes+) before turning your engine off is actually a good idea.
The engine oil could splash out of the oil fill hole.
what is the running mate in engine
There is coolant in the engine block when the engine is not running. The engine block, heater, hoses and radiator remain full when engine is not running.
Leaving it on.
If your alternator is good it should stay running until your engine dies from no fuel.
It's good practice, yes.
Yes, that is good. FYI, if you continue to unplug things while the engine is running you may cause the check engine light to come on.
Exhaust fumes may enter and that is not good.
yes so the rings get oiled up good
No. Unless there is some other problem, leaving a car running overnight will not harm it at all.
My advice would be to set the points at .020" with a feeler gage to get the engine running, and then use a dwell meter to set the dwell after the engine is running.
Perhaps you have a leak in your transmission. Check the transmission fluid while the car is running. DO NOT check any other fluids while the engine is running.
Have you turned the key on and off 4 times leaving it in the on position on the fourth? this will give you the flash codes. Could be the Colant Temp Sensor.
running with out engine oil
A car that is stopped with the engine running.
Get engine running. While the engine is running disconect the POSITIVE termninal from the battery. If the engine dies, the Alterntor is bad.
Operating temperature with a good thermostat will be between 180 and 200 degrees. The ideal running temperature on a 6 cylinder engine is about 196 degrees Fahrenheit.
If the engine isn't running, the battery is low. If the engine is running, the alternator probably has a problem. If you are wearing dark sunglasses, remove them and the lights will get brighter. good luck!
About 12 city/15 highway with a good running engine.
car run good but has a little vibration idle or running
If it's just plain water leaving a little puddle under your vehicle it would be condensation from your air conditioning if it has been running.