SAE TECHNICAL
PAPER SERIES
2000-01-1231
MMC All Aluminum Cylinder Block for High
Power SI Engines

See quotation below:

"Fig. 19 shows the results of the ring wear measurements
of using the DBDS-additive fuel with different sulfur
concentrations. It was clear that the higher the sulfur
concentration, the greater the ring wear at low cooling
temperature."
"Influence of Cooling Water Temperature
Fig.20 shows the results of ring wear measurements by
varying the inlet cooling temperature. The lower the
coolant temperature, the greater the wear. This tendency
become more pronounced when the coolant temperature
is 40 degree celsius and below. Furthermore, even in the
case of high-sulfur fuel, ring wear is small when the water
temperature is 80 degree celsius and above. As can be
seen in Fig.17, change in coolant temperature manifests
the change in wear rather quickly.
This mechanism is as follows:
• Acids in the bore increase when coolant temperature
is low.
• The acids eliminate oil film between the bore and
piston rings.
• Abrasive wear between the bore and piston rings
increase."

Wear is somehow a miracle. This article you are referring to explains why ship diesel engine oils can have TBN values above 40.

If you never warm up your engine above (let's say 60°C) you prevent the anti wear additives to do their job. You'll see increased wear just because the oil does not heat up.

As the ICE has low temps on start up, to reduce wear does the oil have to balance quick flow to parts and high vis/film strength to prevent bore wash. As aw additives are not doing job at this temp, is this not where esters come into play by not only being there on start up but also providing high film strength.