Regular or premium
I know that Chevy recommends premium gas in the 6.2L engine. What do all of you out there use? Is using regular a bad idea?
Forum Discussion
Here is a study AAA did several years back that actual has an Escalade with a 6.2L Ecotec in the test. The study tests the impact of regular and premium fuel on engines that require regular and premium. It shows short burst full load dynos and sustained dynos at 2,000 and 4,000 rpm which is where the difference between the two fuels is most noticeable in the real world especially when towing. There is also graphs on the amount of timing is advanced/pulled along with temps of the catalyst along with MAP/MAF sensor readings.
One major thing to note is the 7.1% fuel economy increase on the 6.2L with premium fuel under normal load. This was contributed to ability of the 6.2L to stay in 4 cylinder mode more often due to the significant timing advance at this load level creating more power per cylinder. The gen one 3.5L Ecoboost also had a considerable fuel economy bump of 5% with premium fuel.
AAA Premium Fuel Research
One major thing to note is the 7.1% fuel economy increase on the 6.2L with premium fuel under normal load. This was contributed to ability of the 6.2L to stay in 4 cylinder mode more often due to the significant timing advance at this load level creating more power per cylinder. The gen one 3.5L Ecoboost also had a considerable fuel economy bump of 5% with premium fuel.
AAA Premium Fuel Research
