They were made to work extremely hard for the latest of those victories, establishing a 20-6 halftime lead before defending for all they were worth after the break.
A brutal breeze at Lansdowne Park saw the teams take turns at setting up camp in the opposition 22, with Tasman's second-half dominance of possession and field position only matched by Auckland's level of control in the opening spell.
The difference in the match was the effectiveness of Auckland's attack when enjoying ball in hand, probing well around the fringes through a powerful forward pack that set the tone for their triumph.
It was appropriate for Joe Edwards to grab his side's first try - just rewards for an outstanding loose forward trio led superbly by Akira Ioane - with Tasman's defence missing too many first-up tackles to halt Auckland's charge.
The 10-point lead the visitors established in the opening quarter was the largest deficit the home side had faced all season and, being forced to survive with only a third of possession, their task grew in difficulty with George Moala's timely try on the stroke of halftime.
Auckland's eventual match-winner came courtesy of Vince Aso's pace early in the second spell, establishing a lead that Tasman, try as they might, could not quite overcome.
Tasman 19 (Wheeler try; Banks 4 pens, con)
Auckland 28 (Edwards, Moala, Aso tries; Hickey 2 pens, 2 cons, Hunt pen)
HT: 6-20