[Jamo]

Best test for cooling efficiency I have come across--autocrossing at Castle Air Base in mid-summer (air temp--107, track temp oncement more like 115). Hauling butt for one minute, then idle for 5 minutes--terrible conditions.

Most of the major competitors run straight water--and these guys love to try and buy new sh!t. I ran WW in my 92 Vette (trust me--tougher to keep cool than a Cobra) and it worked great. Tried water-only and it worked great.

I just dropped 20 degrees on my Cobra's temp--replaced 185 thermostat with a 160...