From an old thread but I thought it was good to repost:
From a GM engineer:
"yep, just ran it around the track a time or two and called it good.....LOL LOL LOL ..... I think you have the aftermarket mixed up with the OEM's. That is how they do it.... What you read was completely wrong. Any engine program like the LS1 for the Corvette, the LS6 currently and the upcoming LS7 are testing on dyno and in cars for YEARS before release to the consumer with the specified lubricants and coolants and such. In the case of the Mobil 1 in the Corvette I would hazard a guess that the number of dyno engines run with Mobil 1 is in the hundreds....like somewhere between 200 and 300 all total. These are engines that run for 200, 300 , 400 or more hours at full throttle, max RPM, max power and are then torn down and analyzed in a variety of ways for wear and other lubrication performance. This is on top of the countless specific bench and dyno tests run on the specific lubrication system, cold start lube system performance, cold overpressurizaration (start at -20 and go immediately to 5000 RPM), cold start field testing and driveability, engine cooling testing, etc. Fleets or test cars are running with the production intent designs and lubes on accelerated durability, endurance, emissions, track testing, etc... The products are testing far in excess of what any customer can do. In the case of the Northstar engines that spec Mobil 1, the Mobil 1 was part of the test program for those engines from the very beginning so every test and dyno engine that ran used Mobil 1. Similarily, the Supercharged Northstar for the upcoming STS-V/XLR-V has used Mobil 1 throughout the test program so it is a well proven entity. Plus, yes, it was run "around the track" a time or two....LOL."
From a GM engineer:
"yep, just ran it around the track a time or two and called it good.....LOL LOL LOL ..... I think you have the aftermarket mixed up with the OEM's. That is how they do it.... What you read was completely wrong. Any engine program like the LS1 for the Corvette, the LS6 currently and the upcoming LS7 are testing on dyno and in cars for YEARS before release to the consumer with the specified lubricants and coolants and such. In the case of the Mobil 1 in the Corvette I would hazard a guess that the number of dyno engines run with Mobil 1 is in the hundreds....like somewhere between 200 and 300 all total. These are engines that run for 200, 300 , 400 or more hours at full throttle, max RPM, max power and are then torn down and analyzed in a variety of ways for wear and other lubrication performance. This is on top of the countless specific bench and dyno tests run on the specific lubrication system, cold start lube system performance, cold overpressurizaration (start at -20 and go immediately to 5000 RPM), cold start field testing and driveability, engine cooling testing, etc. Fleets or test cars are running with the production intent designs and lubes on accelerated durability, endurance, emissions, track testing, etc... The products are testing far in excess of what any customer can do. In the case of the Northstar engines that spec Mobil 1, the Mobil 1 was part of the test program for those engines from the very beginning so every test and dyno engine that ran used Mobil 1. Similarily, the Supercharged Northstar for the upcoming STS-V/XLR-V has used Mobil 1 throughout the test program so it is a well proven entity. Plus, yes, it was run "around the track" a time or two....LOL."