yes. The chargers are meeting T4 vs T0 or T0+ like the P42. the F59phi are also gone which were T0 although they had an easy path to T3.
This is not blended diesel with renewable but pure renewable. B20 has been cleared for a long time
I looked up biodiesel (FAME) vs. renewable diesel (HVO). Biodiesel has percentage blends, B5, B20, B100. Renewable diesel is 100% vegetable, made with a different process, and more like conventional diesel. Sometimes it's called RD, but not B100, as far as I can tell.
Brightline Florida only mentions biodiesel. It has said it uses FPL's EarthEra, which is B20 (up to 20%).
Amtrak only talks about renewable diesel in its planning, and since October 2023 the Pacific Surfliner runs on it.
Siemens is spare about mentioning alternative fuels in its brochures.
Cummins, the supplier of the Charger's QSK95 engine, mentions nothing about alternative fuels in its half dozen brochures, except a standalone
brochure on HVO, how great it is and how it compares with FAME. Cummins must test with B20 I gather, but only says that HVO is the renewable diesel it tests with, and that fuel consumption is 5% higher than with conventional diesel. HVO is "produced by processing waste lipids, such as vegetable oils, tallow or used cooking oils." Perhaps the Surfliner is using an HVO blend, which is one use of HVO. Hard to imagine that much waste vegetable oil is available. Hereabouts it's valued as animal feed, and collected in trucks from waste oil dumpsters at restaurants, which are probited from clogging up the sewers, I think. Anway, it's a favorite place for stray cats.
The Dept. of Energy and Clean Fuels Alliance both say the same thing about biodiesel, that B5 is always fine to use, B20 is good on 80% of new equipment, and B100 is less commonly supported.
How all this compares with 10% ethanol in gasoline (E10) is hard to tell. I'd read at some time that ethanol gasoline is made from corn that would otherwise not be grown, or sold for food or feed. That's aside from the various technical issues: 2-stroke engines, lower energy, etc. One chain here sells E15, as a new way to sell cheap, as well as some flex fuel E85. How these things are less expensive than E10 has been the complaint about fuel vs. food. I guess everybody knows that. Ethanol-free is always a hefty markup, and seems to come either in low or high octane, depending on where you get it.
Cummins has a lot of pages on hydrogen fuel cells in one of its brochures.
