The extra long ones are aircraft spanners, often having a ring and ratchet of the same size on each end

and all the time 1st gear is rubbing on reverse gear, you are making metal filings, for the oil to circulate around the box

Serious leak somewhere, check underneath for fluids, blown wheel cylinder, check for wet/coated backplate and wheel, or master cylinder seals

kigas for the Perkins L4, was just diesel sprayed into manifold from main tank, was also useful if you wanted to get up the hill without changing down, it did push a bit of smoke out tho !

Do your heater plugs work?

Historically it was to stop home bodgers just letting it drain into their gravel drives when changing thermostat/ water pump etc, then filling with neat h2o, Stop pollution, and stop corrosion in the engine

what happens if you swap the wiring?

Any photos as you dismantled?

Surely there are a lot of vehicles out there of any make that don’t need a spanner, or a fix between services, problem is, they don’t show themselves unless they’ve been in your possession for a few years!

So ask him to remove the broken stud !

Take the existing vent out ?

Gear knob can still turn when retracted, it’s not easy tho

Yawn

Any trace of a leak from water pump?

Clean the ones with valves closed first then turn engine to clean the others

Can you screw main body back into nozzle, and keep turning clockwise?

If it was working well before, perhaps you should select low, then high and try it again

Source a suitable rubber grommet

Probably behind rear panel in side of boot space

Is hi- lo in neutral?