An all-oil Grand Fleet would be faster and easier to crew

How would an all-oil Royal Navy from Dreadnought onward affect World War I and Jutland?

British ships would generally be faster, require fewer stokers, and gain more controllable propulsion, though the nation would need larger oil stockpiles.

An oil-fired Dreadnought might begin around 23 knots and give later classes a faster propulsion baseline. Oil flow is easier to regulate than the manual delivery of coal, improving the consistency with which boilers can be driven. It does not remove skill from boiler operation, but it sharply reduces the number of skilled stokers and simplifies fuel handling aboard ship. Britain would trade part of its coal burden for the need to build and protect a much larger oil stockpile. At Jutland, the likely operational effect is a generally faster fleet rather than a single decisive tactical trick.