None - it's already full!
A pint or less mixing with a full tank of gasoline, nothing will happen.
You can put about a pint in a full tank of gas.
A small amount of hydraulic oil mixed with a full tank of diesel fuel, nothing.
to read a oil tank you have to get a oil stick that its long and then put it in the oil tank
Enough for it to be full.
The question is how did oil get in the fuel tank? If there was very little oil put in the tank as in less than a couple of quarts then just fill the tank full and drive the car. The oil will be burned with the fuel and will do no harm. If there was more than a couple of quarts, you can siphon it out with a hand pump. You can get enough out to then fill the tank and drive the rest out.
It depends how much petrol was put in. If it was a "full tank" draining the tank and the system would be advisable. If it was just a small amount, the mixture can be cut by adding more diesel with some motor oil mixed into it It is a common practice in times of diesel shortages to use motor oil with a small amount of gasoline added to it in place of diesel. You will have to use your own judgment as to how much diesel and/or oil to add.
Have the coolant changed immediately and you will be ok.
Enough to fill it to the full mark on the dipstick.
20oz
Put oil in it and Use the dipstick to see how much is in there.. when it gets full that's how much goes in there! Einstein.
it depends if its a older bike you may have to put premix in (mix of oil and gas) in the tank if its a newer bike it will have oil injection and you only have to put oil in the oil tank and it mixes with gas in the carb, in any case try to get a manual for the bike in question it will tell you what to do