Does This stuff reallly work? how many bottles do i need with 15% antifreeze?
I have a 89 camaro with a 305

 

yup.





one.

 

I put two in mine but it's only dropped it like 10 degrees. Which is better than none I suppose O.o.

Oh , Does anyone know how I can reprogram my ecu or whatever to force the fan to kick on at 220F instead of 238F ?

It won't force stay on because once it kicks on , It takes my engine down to around 160 - 170 F.

 

What kind of engine do you have?? If you have a 92 RS (with what I'm assuming to be a L03 305ci TBI), there is a fan switch in the passenger side cylinder head that controls the engine fan.. If you are interested in some replacement fan switches that you can get at the parts store (Advance Auto Parts being the ones I researched), you can look here:

Radiator Fan Switch Alternatives

 

No , it's a gm 350.

I went the stupid route though , still runnin 305 prom n what not.

 

The computer doesn't control the fan on a TBI application.