If you use the wrong weight motor oil in an engine, it is possible that you could destroy the engine due to lack of lubrication, either because the oil's viscosity is to low to provide adequate bearing separation, or because the oil's viscosity is to high to permit adequate lubrication. Use the manufacturer's recommended oil.
Use Honda 10w40 and you will not go wrong.
You mean in a car or other road vehicle? It depends on what's wrong with it. Sometimes you can, sometimes you can't.
Fitting the wrong size starter motor in a Fiat Punto can lead to several issues, including improper engagement with the flywheel, which may prevent the engine from starting. It can also cause mechanical damage to the starter or the engine components due to misalignment or excessive strain. Additionally, electrical incompatibilities may arise, potentially leading to short circuits or damage to the vehicle's electrical system. Overall, using the correct starter motor size is crucial for optimal performance and longevity of the vehicle.
The remains of the old coolant can cause the new coolant to fail. Using the wrong type of coolant can also damage the engine.
It will do no damage if you just added a little of the wrong weight oil. However if you changed the oil and poured in the wrong weight I would suggest your remove that oil and pour in the correct weight.
Since you didn't say what the vehicle is or isn't doing, I can not answer.
What happened to this vehicle?
He might starve .So give him the right amount each day.
Sometimes nothing and sometimes you will just blow the main fuse. Sometimes you can do serious electrical damage to other components. Depends on the vehicle.
If you put in to much oil it will smoke really bad, or will not run. If not enough oil you will damage motor.
There is nothing wrong with the motor there is something wrong with the switching circuits
doesn't matter, you have to yield to oncoming traffic and be in control of your vehicle at all times