Water??

[LateModel B23]

What is the most popular? Water only - tap or distilled. Additives - antifreeze/coolant, something like Royal Purple purple ice or Gibbs CSP.

[badfast47]

I always used distilled. If you don't have it what turned it around on my car was the 4 blade fan if your having a cooling issue.

[LateModel B23]

I always used distilled. If you don't have it what turned it around on my car was the 4 blade fan if your having a cooling issue.

Did you have room to use the bigger 4 blade - 19" ?

[badfast47]

Yes i do but didn't need one that big. Have it close to the radiator as possible, That was the key to it and no shroud. Don't want to B.S. ya but i think it's a 15" i have on there now, Slept since then Cured my heating problems.

[perfconn]

Not just any 4 blade fan will work.The GM 4 blade 405442 has much more pitch than the cheap chinese copys.The CV Products #1519 will also work and they have them in 15-17-19 inch

[badfast47]

I have the gm 4 blade fan on the car and yes it worked perfconn. Don't know about the others.

[perfconn]

Bill,
Use regular water,a bottle of water wetter,the GM 4 blade fan,single pass radiator,25-30% reduction pullys(8000 rpm),and all the external water lines and you will be good to go.