It user to be that coolants did not mater, but that's old school and does not apply to modern engines.Almost all car manufacturers now have there own blend of coolant to protect there own specific components.
VW and I think Audi, if you use a different coolant it turns into jello, overheats and there goes your engine.
GM, the intake falls apart.
Caterpillar, you get cavitation on the cylinder liners.
Honda, degenerates components.
Etc.
Go with OEM it's the same price as any coolant and you won't have any problems and allways use distilled water( no minerals to deposits).