Gearbox noises/oils

corolla 93, 1.3, 4e-fe

Dear friends,

Being a new driver, can anyone tell me if I have damaged the gearbox, on the account of:

semi-forcing it into 1st (pressing clutch while slowing down to hault)?

changing gears while not pressing clutch properly (car in full motion, heard a 'Whirrrrrr' noise)?

Will changing the gear oil protect the gearbox from these human errors?

Cheers

answer no.. GOOD oil is important but shifting the car without the clutch is not a good idea.. it can be done with finess and without making a sound.. but still, dont do it.

as for oil. i use GM syncromesh at 10$ a pinte.. goes very well and smooths out the shifting.

im still on the original transmission and clutch and never had any troubles.

Deadring