My 1985 Shelby Charger has a fairly large intercooler directly in front of the A/C condenser and radiator. I have a replacement radiator with fewer fins than stock. I was experiencing wide swings of the temp needle. I had recently changed the thermostat from 180 to 195. I thought about installing cooling fans but opted instead to improve air flow through the radiator by modifying the Charger nose. Underneath on either side the bottom of the nose has two large openings. I reasoned that much of the air coming through the nose was being forced out these holes so I created a blocking plate for each side. It worked ike magic. The temp gauge scarcely moves now and stays right around the middle mark. I had used my 4000E to check temps running down the road and I know that the middle mark is 204 degrees. Before it was getting up to 213 degrees at the three quarter mark on the gauge.