My mom drives a Miata with a little over 100k miles on it. I'd like to change out the coolant this weekend before things get really hot. I think the car has had a bad thermostat that I replaced a few years back but other than that I don't know if any maintenance has been done on the cooling system.
I'm not sure what the recommended coolant would be for this car. Any suggestions of brands/types are appreciated. I only have done toyotas in the past and they make it easy by saying to use their long life coolant.
2013 Tacoma 5spd 4x4 - 17k - TGMO 0W20 & OEM Filter
2007 IS250 RWD - 133k - PU 5W30 & OEM Filter
1999 Miata - 105k - PU 5W30 & M1 Filter