Someone is pretending that he is an expert in cars. What is the single question you would ask to call him out?

Ask him how Active Drive works on a GTR

What type of blinker fluid do you use? Orange or clear?

Will it fit in my honda?

unnecessary uncommon questions no petrolhead would ask and it sounds weird.
something like “can my stroke be longer than my rod?”

Since I wear everyday a car related tshirt I’d ask what car is this

Is manual really better than auto? Explain in less than 3 sentences

What kind of blinker fluid do you use?

Where do I put the blinker fluid?

Ask him whats the difference between a Nissan Skyline and a Bugatti Veyron :D

Talk about energetic equations for spring shox.