I wasn’t trying to slam you thinking out of the box is a good thing. I’m not expert on methane or natural gas either I’m sure there is probably refining differences. I do know from my GE days that the LM2500 engine (this engine was supposed to run Delfin’s compressor station at one time not sure if still is the case) running on natural gas has a coking problem. Natural gas has more hydrocarbons than methane among other things. I believe methane has more hydrogen atoms. There must be something about this cowboys name people either want to jump my a$$ or delete me:)
Here’s an article estimating an approximate volume of LNG to be used for SpaceX. The approximate volume is 1000 tons of LNG per starship per launch. Later in the article is also describing how LNG can be further refined to produce methane