I believe you can access the IAC listserve archives from landings.com
A couple years ago this topic was discussed and discribed, including
manufacturer and model number of the tape used.

Jay Honeck wrote:
At Reno, all the Formula One and Sport class racers had every single
non-aerodynamic gap covered with clear tape.

Which got me to thinking, there are LOTS of non-aerodynamic gaps on my
Pathfinder.

The stuff looks like basic, clear packing tape. Anyone used this stuff? Is
there any benefit at all, or is it one of those "over 200 mph" things, like
the spoiler on my Mustang?