Question:

One of my fellow racers said I need a locking dipstick tube for my transmission, is that correct?

Answer:

Yes, in the 2019 NHRA Rulebook, General Regulations Section 21, 2:14 Transmission, Automatic/NHRA-Accepted, it reads All cars running 10.99 (*6.99) seconds and quicker must have an NHRA-accepted locking-type dipstick on the transmission, and dipstick/filler tubes must be securely fastened (i.e., bolted, aircraft clamped). wire ties, hose clamps, etc. prohibited.