What is the difference between the 'K' and 'K-EPA27' marking codes used on a cargo tank?

Question

Accepted Answer

K marks a leakage test performed generally under 180.407, while K-EPA27 specifically marks the EPA Method 27 leakage test variant performed under 180.407(h)(2) after October 1, 2004

Answer

K-EPA27 fully replaced K in 2004, and K is no longer a valid marking code today

Answer

K applies only to straight tank trucks, while K-EPA27 applies only to tank trailers

Answer

The two codes are interchangeable and mean exactly the same thing