92 Series Rotella ELC NF coolant.

[Messi]

I've always tried to stick with power cool...but ive been seeing alot of Rotella ELC NF bottles in engine rooms. Thoughts?

 

[Captain Ralph]

Looks like a pre mix with a claim of some kind.
I'm an old adage, when in doubt, stay with the factory recommended products.
Even the power cool label gives you mixing instructions for 40/60 or less.

This may help;

https://www.samsmarine.com/forums/s...-s-Coolant-Capacity-27Gal&p=418379#post418379

If your shopping, Your going to save some pennies, is that enough to change from factory recommendations?