Originally Posted by tiger862
Sequence VIE - Requires 19-39 percent improvement in fuel economy, depending on oil viscosity
ILSAC GF-6 motor oils will meet the requirements of modern engines currently unmet by GF-5, including improved fuel economy compared to motor oils meeting the GF-5 standard, and helping prevent LSPI and timing chain wear.
These are a few things that will change. Valvoline Daily Synthetic Blend is a fuel mileage oil so maybe it meets GF-6 already but can't label as such. Who knows.
https://www.motor.com/2019/05/get-ready-gf-6-motor-oil/
This is the testing protocol:
https://www.swri.org/sites/default/files/sequence-vie-test.pdf
Quote
Fuel consumption is measured for six speed/load/temperature test conditions compared to an
SAE 20W-30 baseline (BL) lubricant to ensure consistent engine response.
• FEI 1, FEI 2 and FEI Sum (FEI 1 plus FEI 2) are calculated from those comparisons.
• The candidate lubricant is introduced and aged for 16 hours at aging conditions and then fuel
consumption is measured for six test conditions for FEI 1.
• The candidate lubricant is left in the engine and aged for 109 hours at aging conditions for FEI 2.
• Fuel consumption for each of the six test conditions for BL after.
You'll note the baseline lubricant is an SAE 20w-30; essentially an SAE 30.
Here's an SAE document on the test:
https://ballots.api.org/marketing/ballots/docs/eBallot-Seq-VIE-Ready-Prec-Matrix.pdf
Now, if I'm reading the slide on page 13 correctly, the range of improvement over baseline is ~0.6-3%
This replaced the current Sequence VID test, because the engine is no longer in production. The limits for the current version of the test are:
https://www.swri.org/sites/default/files/sequence-vid-test.pdf
Also based on the same baseline 20w-30. So I expect that the Motor article has forgotten a decimal place.