The demonic engine takes a s*** ton of fuel don't recommend using it only use it if you are using the engine from the garage (aka the worst engine in the game) Even though i traveled 15,000m one time i have never seen a so-called "carbureted engine" a single time throughout my first and last of right now attempt of reaching 25,000m The v8 engine is the definition of "hi guys kingkage here!" And now the normal engine okay um f*** this engine it's absolutely horrendous never use it ever again if you have something to replace it