How hot is it running? The stock gauges are **** !
But since your in california and all. Go with 90/10 water/coolant, with the water wetter. Then get a high flow electric fan. That will give you more fan speed at those low rpms. That fixed my problem when I had this.
Skyler
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-1989 Saleen Mustang #406-
TFS TW Heads, E-303, Edelbrock intake, 70mm TB, 73mm MAF, 24lb injectors, 1 5/8 shorties, Off Road H, 3 Chamber flows, Jaz Race seats, Back seat removed, sub-frames, Roll Cage, and a 80 shot of N20.
12.54@107.4 Motor
332RWHP, 350rwtq