From Lube Report:
http://www.imakenews.com/lng/e_article001412051.cfm?x=bfqPB03,bd28TMM
Quote:
ILSAC GF-5, the new passenger car engine oil specification slated for completion in December, will put better oils in motorists’ crankcases. But its development involves tradeoffs between fuel economy and robustness, according to an expert panel
Quote:
ILSAC, in cooperation with API and ACC, now is finalizing the latest upgrade, as always associated with government-mandated emissions and fuel economy standards. “When I asked Hannah Murray what Toyota considered most important for GF-5, she said, ‘fuel economy, fuel economy, fuel economy and maybe fuel economy.’ Jim Linden of GM said about the same thing...
Quote:
Only 0.5 percent of fuel economy improvement over current GF-4 oils is expected to come from the lubricant...But the ACC anticipates a move to lower viscosity grades and continued use of friction modifiers to deliver fuel economy benefits.
Quote:
For emissions control system protection, a new Sequence IIIGB test will analyze how much phosphorus remains in used oil, with anticipated limits of 78 to 80 percent phosphorus retention, Shah continued. A variety of engine and bench tests, plus more stringent limits for existing tests, are under consideration for oil robustness...“The timing is a challenge and the tradeoffs are a challenge,” Shah concluded, “but GF-5 is a significant upgrade over GF-4.”
Quote:
“SAE 0W-20 can be formulated entirely with Group III base stocks or a Group II/Group IV mix,” Brown noted...Looking forward to 2015, “expect SAE 0W-20 to grow, although U.S. OEMs are not going to follow until GF-5 is in place. And you don’t need to use PAO to make 0W-20.”
Again government mandated fuel economy and emissions requirements trump oil performance.
Tom NJ
http://www.imakenews.com/lng/e_article001412051.cfm?x=bfqPB03,bd28TMM
Quote:
ILSAC GF-5, the new passenger car engine oil specification slated for completion in December, will put better oils in motorists’ crankcases. But its development involves tradeoffs between fuel economy and robustness, according to an expert panel
Quote:
ILSAC, in cooperation with API and ACC, now is finalizing the latest upgrade, as always associated with government-mandated emissions and fuel economy standards. “When I asked Hannah Murray what Toyota considered most important for GF-5, she said, ‘fuel economy, fuel economy, fuel economy and maybe fuel economy.’ Jim Linden of GM said about the same thing...
Quote:
Only 0.5 percent of fuel economy improvement over current GF-4 oils is expected to come from the lubricant...But the ACC anticipates a move to lower viscosity grades and continued use of friction modifiers to deliver fuel economy benefits.
Quote:
For emissions control system protection, a new Sequence IIIGB test will analyze how much phosphorus remains in used oil, with anticipated limits of 78 to 80 percent phosphorus retention, Shah continued. A variety of engine and bench tests, plus more stringent limits for existing tests, are under consideration for oil robustness...“The timing is a challenge and the tradeoffs are a challenge,” Shah concluded, “but GF-5 is a significant upgrade over GF-4.”
Quote:
“SAE 0W-20 can be formulated entirely with Group III base stocks or a Group II/Group IV mix,” Brown noted...Looking forward to 2015, “expect SAE 0W-20 to grow, although U.S. OEMs are not going to follow until GF-5 is in place. And you don’t need to use PAO to make 0W-20.”
Again government mandated fuel economy and emissions requirements trump oil performance.
Tom NJ