1-st Gear or "granny Gear" is just to get the car from not - to moving - then 2nd can take up the speed with a little less torque present.
Not saying to start out in 2nd gear, no! Just if still moving - the Transmission has a high-rev lockout in 1st - if it's worn, then you need to be more gentler with the tranny - just keep the engine from lugging too hard - higher gears need rpm and speed -so 2nd's about as low as you can go.
Which brings up another condition...
How is your alignment?
- Tires inflated to correct pressure?
- Brakes are not dragging?
- Wheels are straight - drives straight - no drift?
- Does the steering wheel pull in one direction when you stop? How about - take off?
- Might need work on bearings Brakes, onto just a simple air pressure adjustment of the tire affecting the pull.
A lot of little things can help ease this condition by taking the time to make sure the vehicle, when stopped can start to roll again.
Do this in a flat parking lot and see just how hard it is to move the vehicle - stop it, put it in neutral and release all the brakes - does the car roll?
How about shutting off the engine - leave in neutral and get out and try to push it - if it takes more effort or a LOT of pressure - bends the plastic on the bumper kind of result - might need some research into that why...
Another? How about - how long will this roll - stops as soon as you let off the pushing effort?
If Yes, then you might want to look into getting the car an alignment or more investigations into why it won't roll easily.
- and if it requires a lot of effort to keep it moving - worn systems cause drag
- - if it takes a lot of effort of pushing
- - you might want to correct that condition too
- - vehicles that roll easier don't waste gas on overcoming friction and can shift easier too.
The more aware you become of the changes in your cars condition can help you make better choices - even in selecting and using the proper gear.
A 100K is a lot to accomplish - in any car - Kudos for having last this long!
Hope this helps!