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Originally Posted by Pres712
Dave: Are you running your A/C? I guarantee that my '86 will run all day, on the road, at 160 and my '03 will run at 172. BUT, turn on the A/C and the '86 will shoot up to 186 and the '03 will go to 185. These are readings off the digital dash. The '86 does not have an "auto" setting and I never use that setting on my '03, so these are manual settings.
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Most unusual temps for a C5. My '04 C5 always cruised at 195-200 w/ or w/o the A/C...didn't seem to make any difference. Temps soared to 225+ in heavy traffic. When I got the C6 last Sept it behaved much the same till I installed the 160 deg thermostat. While the higher temps may not affect operating efficiency, it just makes me feel better knowing that there are cooler temps under the hood
