I believe you’re being too quick to dismiss.
Yes, you asked about heptane.
You also asked how to make a great product with it.
Using it as a tool in your arsenal as opposed to your only hammer might be be a decent suggestion.
Given that using it as a single solvent seems likely to loose more terps** than lighter hydrocarbons or even ethanol, suggesting using it in a different capacity seems like a perfectly valid response.
It was certainly given in the right spirit (190 ethanol )
I’ve also found that the off topic clues around here are often the most useful…
**Im willing to take @Shadownaught’s word they can be saved if one knows how to whistle