Good news, but presumably this rule only applies to
new engines out of their 8 allocation, or can they retrospectively upgrade their Bahrain engines (other than changing Seb's spark plugs?).
Similarly, if they can't get the changes in place before Melbourne (where they will presumably use new engines?), does that mean that the reliability upgrades will only apply to the remaining 6 engines?
Perhaps there are some upgrades that would be easy to apply retrospectively to old engines without deeming them to be unfair refurbishment of sealed engines, whereas more structural changes can only be made to new engines?
