At your local hobby store or A Main Hobbies.
Al Capone
Not all the cars can have nitro but for those who can, you just have to buy the nitro parts.
if u do not leave near a hobby store u can order fuel off of towerhobbies.com and if i am correct they have a distributer in texas
RC Nitro CarsNitroRCX.com has the one speed nitro rc buggy for $119. See the related links below for two other sites you can buy inexpensive RC Nitro cars.
You can buy a Discord Nitro subscription from your User Settings under the category "Subscriptions"
Petrol is explosive and harmful were as nitro is the safer and cheaper is is better for children drivers lol petrol RC cars are usually 1/5, or bigger scale than nitro ones which are usually like 1/10 ------ The specific mixture of the fuel is what makes them different. The main ingredients of nitro fuel are nitromethane, methanol, and synthetic oil or castor, plus other minor additives. Petrol or gasoline, on the other hand, Petrol, is a more common and accessible one that you can buy at the nearest gas or petrol station. It's transparent liquid derived from petroleum. You can read and understand more about nitro fuel at this link http://www.rcmodelswiz.co.uk/users-guide-to-rc-nitro-fuel. Hope that helps answer you question.
up your mums vagina
If you mean an engine that runs on Nitromethane I think they are no different than the normal RC engine. the engines and the fuel can be purchased at most hobby shops.
The nitro Venom dusk shoots .177 caliber pellets. You can buy them online from Amazon.com or eBay. You can also buy them at your local Farm and Home Supply store.
You can buy liquid nitro at a coolant store
Have you tried Tower Hobbies? www.towerhobbies.com they sell quarts of 10% nitro for planes and 20% nitro for cars and boats