Quote Originally Posted by UtahPete View Post
This Zerex product seems to meet all the requirements called for by the Spyder Operator's Manual. It is H.O.A.T. and G-05, and specifically mentions it is safe to use with all aluminum engines. It is certainly less expensive and more readily available than the XPS stuff (which is the OEM brand).

https://www.amazon.com/dp/B0033QQ4VW...2-587d01f975e8

The only thing that I see is that under the specs the very 1st thing it says is "Ethyl glycol" and I don't see it listed on the Zerex G-05. I'm not sure if that even matters.

The Valvoline Zerex Original Green Antifreeze/ Coolant https://motorcareguys.com/best-antif...iginal%20Green does show it and is for aluminum engines as well as Havoline Xtended Life Antifreeze/ Coolant https://www.amazon.com/dp/B00M1Y7QJQ...ogi&th=1&psc=1 Unless someone see something that I didn't either of these would work along with Dexcool (At least the Shell Dexcool) I only read up on the Shell Dexcool.

So it looks like there are several options out there. Again for me "I would never mix coolants" from one brand to another.