Coolant additive in diesel generaters?

[scoggins_jim]

Diesel engines require a coolant additive in the anti-freeze. I had a
Detroit 8V92 and now this Cummins 8.9. In both cases, and in my Ford
F350 Diesel, the instructions are clear about using an additive. My
previous coach had a Yanmar powered Kohler for the generator and this
coach has the Power Tech diesel generator.

I have never seen a cautionary note about being sure the generator
engines had the coolant additive. For the heck of it I put it in the
Yanmar cause I thought it made sense to do so. Further, I have a small
Kubota farm tractor with a relatively small engine (23 HP) and it's
manual had no reference to using an additive. I put it in cause I
thought it made sense to do so.

I think I understand the necessity behind using an additive so I think
the compression ratios of the diesel generators and the small farm
tractor would dictate their use.

Taking it one step further, although a gas engine does not have the
higher compression ratios that would dictate additive usage it seems
they would benefit nevertheless with a neutral PH in the coolant system.

Accordingly, what is the group wisdom on:
Q1. Should one put the coolant additive in the coolant for the diesel
generators.
Q2. Would their be some benefit to putting it in the coolant system of
a gas engine.

Yeah, I know, I'll call Powertech tomorrow but I wanted to know the
groupthink before I talked to them.