Bird
Rest in Peace
Speaking of "stock" cars, how many here remember the old Mobil Economy Run that used to be done each year? It was a (fair?) approximation of fuel mileage before the EPA ratings. You may notice the comment, "Automakers tried to "prepare" their cars to achieve better results."
Since the cars were bought from dealers' inventory, the automakers didn't know which of their cars would be selected. I believe it was 1957 or 1958 when Chrysler products had some rear differential failures and it eventually hit the news that Chrysler put motor oil instead of SAE 80-90W gear oil in all the cars they made for a 2 week period to be sure the one bought for the Mobil Economy Run had thinner oil in the rear end to help the gas mileage.:laughing:
Since the cars were bought from dealers' inventory, the automakers didn't know which of their cars would be selected. I believe it was 1957 or 1958 when Chrysler products had some rear differential failures and it eventually hit the news that Chrysler put motor oil instead of SAE 80-90W gear oil in all the cars they made for a 2 week period to be sure the one bought for the Mobil Economy Run had thinner oil in the rear end to help the gas mileage.:laughing: