just got back from a drive in 100* heat after swapping my stat with the reische 170. siphon pumped the contents of both coolant tanks, swapped stat with no mess, put 2 bottles of WW in the motor side and 1 in the IC, filled both with distilled water. easy 15-20 minute job with about a needle-width drop on the factory gauge from normal. no tune yet for fan change but it is coming, until then most of my driving is hwy anyhow.