I have a clothing brand I've been working on and really like the look of the STP Oil logo. I've seen some bigger name brands make parodies of logos like this before, I was wondering what the actual legality of this is?
I've heard of patagonia sending people cease and desists for logo rips, but I've also seen/heard companies never being contacted over a logo appropriation. Does this still fall under the parody law where atleast 30% of the image must be changed?
Essentially, I'd be changing the "S", "T" and "P" into the name of my brand, while using the general shape and colors. I originally planned to just use this for marketing on Instagram, but would I also be able to sell it on clothing later on?
Edit: Posted on law stackexchange as recommended by commentors.