I think you should start your business, and hire people who have experience with gas/diesel/LPG. there is no need to work under someone. yeah just take basic knowledge of them, and even if you start you can easily learn about them, you will have time to concentrate. and even you will grow your business. if you do a job you will learn everything very slowly. so I suggest opening up your business.
refer: https://businessentitysearch.us
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.