Jambier wrote: ↑03 Feb 2026, 12:37
Wouter wrote: ↑01 Feb 2026, 13:17
edu2703 wrote: ↑31 Jan 2026, 18:25
Do we know if the teams are already using synthetic fuel in testing?
I saw a news item on AMuS that some suppliers had requested permission from the FIA to use non-compliant fuel in pre-season testing. So perhaps there's a possibility that some engine manufacturers haven't yet tested their power unit on track with synthetic fuel.
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The teams are using synthetic fuel from the start of the Australian GP.
What would be the benefit not to use synthetic fuel since the start of testing ?
I'm of the opinion everyone (or at least most of the teams) used real 2026 fuel as it makes sense to do in testing, especially behind closed doors. All the rumors about the fuel seem to be just speculation because FIA allowed the teams options to not use 2026 fuels.
But, to steelman this argument, if the team is unsure of reliability of their engine and are worried it will cause their car to break down, by using non 2026 fuels they can check off everything else. For example they can check aero, integration, gearbox, test how these cars drive with the electrical energy, etc. You could theoretically leave the fuel check for a second or third test, especially if you are behind schedule.