Yeah, I'm not sure lacquer will hold up to petrol.
When restoring my friend's 1927 Rolls Royce, in order to maintain authenticity and original paint, we scraped off all original lacquer, ground it up and dissolved in thinner. Then sprayed it back on! Was able to declare at Pebble Beach that it was "all original paint"!!! ahhahhahahah.....
The next one we did with Dupon Imron and it was much more glossy and more durable.