A higher octane gas or an after market octane booster.
But, if your car/truck is knocking, then something is wrong, either your timing is too far advanced or something more in depth..
Sometimes. It depends on what is causing the knocking.
You have to put a please knock sign on your door.
No.
car starts but when i put it in gear it stop
well it depends if your wanting to go backwards then you put the car in reverse . or if your wanting to stop then you put the car on neutral.
Put the car in neutral and apply the brake.
You have a balloon car? Heh. Put your foot in front of it.
you should put your car in neutral when it has come to a complete stop, or when you turn it off or on
yes. Depending on how long the engine was allowed to run low on oil, it may have suffered serious damage which would shorten it's life span.
Knocking
friend
Could be the brake caliper or the CV joint going.