Youll need the gasoline canister, as this does NOT work with diesel
(Alternatively, use the ferndale, ruscko or satsuma)

Then mae sure that you are stocked up on ciggarettes and that Teimos shop is open

Now, go to the petrol station besides teimos and begin refuelling you vehicle or canister
While refuelling, press "I" to get a ciggarette and double tap "I" to throw it

Now comes the hard part

You need to throw the ciggarette into the fuel hole of the canister/vehicle, and when youve hit (spoiler alert, youll know) youll see the colour orange and shortly thereafter, you will die.