Antifreeze Prestone or OEM Mazda

Ditched the G11 for the Prestone 50/50 stuff a while back. Good stuff not problems and hell of a late cheaper then G12.

Of course I've only used the Prestone stuff, not the GM stuff (not sure if it's identical) but ran it on my GTI with no probs and over 100k on my Rabbit without issues.

I've had good luck with the orange Prestone stuff. It's DexCool approved.. basically the same thing as G12 as far as chemistry.

Yes i have used it in my 98jetta wheni replaced my heater core. i have had no probs yet benn 6 months they wouldent sell it if it did not work

I use the new Prestone stuff. No issues...

I've been running Prestone for a year and half, no problems with the cooling system and the engine temps are the same.

Same here, and I almost have 200,000 miles on her. According to Prestone, their green stuff will not damage the engine and or gaskets.

I'm using 50/50 orange coolant (I forget if it's Prestone or Zerex, silver bottle with an orange top) same as I've always used.

Dude just get a NON PHOSPHATE, NON SILICATE COOLANT, it does not matter who makes it or color. BTW Prestone extended life is great and what I run and u can find it for about 8 dollars a gallon, all u need. just flush it really good.

When I bought my Jetta it was filled with Prestone. One time the fan switch crapped out on me so while replacing it I did a coolant flush and decided to use G12. About 2 weeks later the car started overheating like mad.