I look at it this way, you like what you like. I think the problem is alot of Trans* people try to keep to the more feminine end of the spectrum as it may help them be more accepted as female. Me Personally, I love Video games, RC Cars, Offroading, Anything automotive related. Doesn't make me any less of a woman for liking those things. I drive my Jeep Daily, whether I'm en fem or in guy mode, but its what I like. I also have 2000 S10 Pickup that will be getting a small block transplant at some point in the future, once again not very girly by society's standards, but that's on them. Just remember you are who you are, everyone is unique, has their own likes and dislikes. Whether you are a Transman, Transwoman, CiSman or Cis Woman. You are who you are and you should embrace that. Personally I think it would be funny once I am full time to show some gear heads up.
This my Jeep, I posted this because a picture is worth a 1000 words. Not very girly, more gender neutral if anything.