What the title says. Can i go onto my dads car insurance and drive my own car, instead of driving my dads?

No unless your dad is willing to be the first driver for BOTH cars that means hes paying for them, also thats called fronting which is illegal
fronting- getting a family member with more years no claims bonus to be the main driver of the car and you being the secondary, but the secondary driver i.e you, are using the car mostly

yes but you'll need to buy separate insurance for your own car.

This depends on your situation.

You can:
1)Be listed in ANYONE's insurance policy for a specific vehicle, add a vehicle at a later date with the policyholder present at an office location or over the phone
2)Be listed in ANYONE's insurance, whether related or not and later acquire your OWN insurance to a seperate vehicle or additional coverage by a seperate company
3)You can be listed in an insurance policy without ever owning a vehicle, though this shows insurance responsibility and as long as payments are made on time - can be used at certain chevrolet or gm dealerships to obtain financial support for easier car approval.

No.
You'd need your own insurance to drive your own car, Dad's insurance only covers you to drive his car, assuming your name is on the policy.

no you can't. Your father's insurance is for his car only. Your own car must have its own insurance. If you are the main driver then it must be in your name or it will be illegal and invalid. "Taking a chance" will ultimately cost you even more in legal issues.

no you can't. Your father's insurance is for his car only. Your own car must have its own insurance. If you are the main driver then it must be in your name or it will be illegal and invalid. "Taking a chance" will ultimately cost you even more in legal issues.

Private car insurance policies are for one car only. If you went on Dads insurance as a named driver you would be insured to drive his car and no other car whatsoever (he MIGHT be able to drive other cars not belonging to him but you WILL NOT)
You are clearly looking at ways to get cheaper insurance - you need to read this
http://www.bbc.co.uk/news/10241769

You can go onto your dad's insurance as a named driver for the purpose of driving his car.
If you want your own car you will have to insure it separately with you as the main driver. You can put your dad on your policy as a named driver which will bring down the premium if your dad has a good driving record.

no, your dad's insurance you dad's car these are the rules