Onan 8KW MDKDJ Coolant?

[merlinj79]

Manual says PEG coolant, makes perfect sense for a 1994 vintage unit.

But the stuff in the tank is orange, pretty sure it's DEXCOOL, which I'm familiar with and use in my SUV's.

3208 engines have the pink CAT stuff.

Any thoughts? DEXCOOL is PEG based. Is it OK to use in the Onan, or should I flush it and install traditional green coolant? Or just use the CAT coolant?

Maybe OAT coolant provides better corrosion protection in a marine application?

 

[Alaskan Sea-Duction]

Manual says PEG coolant, makes perfect sense for a 1994 vintage unit.

But the stuff in the tank is orange, pretty sure it's DEXCOOL, which I'm familiar with and use in my SUV's.

3208 engines have the pink CAT stuff.

Any thoughts? DEXCOOL is PEG based. Is it OK to use in the Onan, or should I flush it and install traditional green coolant? Or just use the CAT coolant?

Maybe OAT coolant provides better corrosion protection in a marine application?

I run the green Preston. Some here will disagree as it is not necessary "marine"

 

[Mischief Managed]

I run CAT ELC in mine and in my CAT mains. This way, I only have to carry one type of extra coolant.