Green-ish coolant...?

[categorytheory]

Hello all, so quick question / opinion on the coolant in my 96 LX450. I recently purchased this guy and I’m running down originally the dread p0401 code.... finally got that to go away and now I’m dealing with a P0125 code, coolant and ETC issue.
My first stab is to add more coolant but upon inspection I cannot tell if it’s purely green or red. It’s more of an orange (maybe rust) with a green tint. Pics below. I know the adage to stick with what’s in the truck.... but I need to figure out what’s in the truck to start out with . Thanks!

 

[categorytheory]

Btw my guess here is that it WAS green at one point and broke down and now has some rust in it.... but that’s a guess...

 

[ppc]

When in doubt it is best to do a complete and thorough flush and refill with your choice.

 

[LockedCollector]

^ 100% agree. There are so many color coolants now it’s best to do a complete flush (rad, block, heater cores) and know exactly what is in there.

 

[categorytheory]

Ok fair.... so I can find the radiator plug from the manual.... but where is the block plug / bolt!? Pic?

 

[tominboise]

Block plug is on the drivers side about the middle of the engine - fore and aft. 14mm if I remember correctly. Able to access through driver's wheelwell, through the small rubber flaps between the inner fender and the top of the frame, using a long extension or two.