What weight FRont fork oil? it says automatic transmission fluid. ?

standard weight for that model is 10 wt. for your trike application you may want to go with 15 wt. Automatic transmission fluid is a good substitute for 10 wt. and was actually reccomended by Honda for years back in the day.

There are no specs for front fork travel. The forks will travel from full compression to full extenison. Use Harley type E fluid.

Take the weight off the front wheel, remove the big nut at the top of the forks, at the bottom of the forks you will see a small bolt head, this is the drain plug for the fork. Remove the plug and drain the old fluid out of the forks then replace the plugs before filling the tubes with the new fluid. Make sure you put exactly the right amount back in the tubes or you will have either a spongy ride ( not enough oil ) or a hard ride due to too much oil.

Not brake fluid or Hydraulic oil ( oil weight is the issue)
Drain forks ( bottom nipple) , remove top bold , be careful it is pressurized by spring . Use the right tool otherwise will damage bolt and your face.

Front forks should be sealed properly, fork seal should be intact, no water or brake fluid in them. Right amount of fork fluid is imperative along with oil weight specification ( check manual and appropriate oil weight for your bike), wrong oil and amount can otherwise damage your forks.

For the 1982 GL1100 the front fork capacity is 9.8 oz. (290 cc) per tube. The recommended fork fluid is Automatic transmission fluid (ATF) or the equivalent 5 wt fork oil.
1980-1981 GL1100 7.0 oz. (220cc)
ALL GL1000 5.8-6.1 oz. (170-180 cc)

front fork fluid capacities right 423cc (14.3 oz) left 429cc (14.5oz) the fluid to be used is ATF according to the Honda Shop Manual

oil dont have a weight it has a "viscosity" and just ask for "fork oil" its like jack oil very thin,,,,

2000 TOYOTA TACOMA 2.7L 4-cyl Engine Code 3RZ-FE

Engine Oil Grade 1......API* All TEMPS......5W-30 Optional ..10W-30
Engine, 2WD, with filter..........5.5 liters
Engine, 4WD, with filter..........5.4 liters

Manual Transmission,......GL-5/ GL-4 All TEMPS......75W-90
Automatic Transmission,A340E......AF3 / A43D......AF3

Differential, Front/ Rear W/ ADRD......GL-5 ALL TEMPS......75W-90
Differential, Front Less ADRD......GL-5 ALL TEMPS......80W-90

Transfer Case,......GL-4/GL-5 ALL TEMPS......75W-90 Gear oil.

Capacity:
Cooling System, Initial Fill..........8.5 liters
Automatic Transmission, A340E Initial Fill..........1.6 liters
Automatic Transmission, A340F Initial Fill..........2 liters
Automatic Transmission, A43D Initial Fill..........2.4 liters
Automatic Transmission, Total Fill
4 speed A340E..........7.2 liters
4 speed A340F..........10.1 liters
4 speed A43D..........6.5 liters
Manual Transmission, ..........2.5 liters
Differential, With ADRD Front..........1.2 liters
Differential, Without ADRD Front..........1.1 liters
Differential, 2WD V6 Rear..........2.6 liters
Differential, 4WD Extra Long Rear..........2.5 liters
Differential, Short WB With LSD Rear..........2.7 liters
Differential, Short WB Without LS Rear..........2.6 liters
Transfer Case, Electronic..........1.2 liters
Transfer Case, STD..........1 liters