I want to know whether it uses both gear oil and ATF

need to know the transmission type --manual or automatic
for manual most recommend a light weight mineral oil but experience shows 80-90 gear oil the best
for auto
stick with the recommended atf for your model and it it is a CV transmission --only the recommended oil as atf will damage the box

Depends on whether you have an Automatic or Manual transmission.
For automatic: Type T-IV ATF
For manual: Multi purpose gear oil API GL- 4 GL- 5

you do not mention if automatic or manual so I will give you freezing points for atf and gear oil
the freezing point of atf oil used in automatic transmissions is -62.5 degrees F so unless the oil is very old and is contaminated with water the oil would not be frozen
gear oil(Shell used in diffs and gear boxes 68 grade ) has a pour point of-24 degrees c
however as a petroleum product, all types of non-synthetic oil will not freeze solid
if you mean that the gear selection was impossible then it may be tolerances that are affected by the cold
how to stop it--- possible to house the car in an insulated garage with a simple bar heater operating to keep the room above freezing point

MAZDA ORIGINAL OIL ATF M-V - Mazda - Gear Oil - Finol Oils

www.finol.ie > Products > Automotive > Gear Oil
Following models can use Mazda Original Oil ATF M-V. Mazda 3, Premacy, Mazda323, Demio, Mazda 121, Mazda 626, Mazda 6, MPV. Suitable for power ...

Call your local parts store or dealer they can tell you the recommended fluid most likely 75-90 but if the trans housing is aluminum it could use atf.

change the ATF spacific type and clean the straner and change the filter

hi it can be the clutch is not totaly disengageing i dont know the year of your hi ace check the hydralic oil for the clutch or if its a very old truck the clutch cable can also be syncronizers 1gear or no gear oil in trans" newer models use atf oil

How to check & re-fill gear oil in automatic transmission on 1996 Audi A4:

At the bottom of the automatic gearbox (tiptronic) you will find 2 threaded plugs on below surface. First (in front of the car) is for emptying, and second is for filling up. Tightening torque is 24 Nm.



Automatic Transmission Fluid (ATF) checking:
1. Requirements for check:
1.1. Vehicle standing on level surface.
1.2. Transmission must not be in fail-safe mode.
1.3. Shift lever in "P" position, parking brake applied.
1.4. Engine idling.
1.5. Air Conditioner and heater OFF.
1.6. ATF temperature must not exceed 104 Fahrenheit degree (40 Celsius degree) at start of test.
1.7. Only ATF with designation ESSO LT 71 141 may be used. Do not use any lubricant additives.
1.8. Automatic Transmission Fluid ATF - part number: G 052 162 A2 (1 liter wrapping)
1.9. An ATF level check when transmission oil temperature is too low results in overfilling, when too high results in underfilling.
2. CAUTION: Too much or too little ATF will affect the operation of the transmission. The ATF level must be checked at regular intervals.
3. The oil level is correct if a slight amount of oil runs out when ATF temperature is between 86 Fahrenheit degree (30 Celsius degree) and 113 F deg (45 C deg) (caused by increase of oil level when heated). For warmer climates, 122 F deg (50 C deg).
4. Hang filled ATF reservoir VAG 1924 as high as possible.
5. Shift lever in "P" position, engine running at idle.
6. Place oil drip pan under transmission oil pan.
7. Remove ATF filler plug (at the bottom of the automatic gearbox you will find 2 threaded plugs on below surface. First (in front of the car) is for emptying, and second is for filling up.
8. With ATF temperature between 86 Fahrenheit degree (30 Celsius degree) and 113 F deg (45 C deg), for warmer climates, 122 F deg (50 C deg), a slight amount of oil will flow from filler hole when ATF level is correct.
9. If necessary drain or top off ATF to attain correct oil level. Top ATF with filler hook from VAG 1924 ATF reservoir. Insert VAG 1924 (tool) ATF reservoir filler hook into filler hole and top off until a slight amount of oil flows from filler hole.
NOTE: Fit filler hook into one of the oil deflector cap slots placed on the filler opening.
CAUTION: Do not press filler hook upward or oil deflector cap can be pushed off.
10. Reinstall ATF filler plug. Tightening torque is 24 Nm.

Bring vehicle to a transmission shop ASAP. If the spilling oil is automatic transmission fluid (ATF) ( usually pink but Honda has been known to use regular oils in transmissions )your leaking ATF and its affecting the subject gears.

Castrol Syntorq® LT 75w85w full synthetic gear oil is the only factory approved lubricant for NV4500 transmissions. ATF is for automatic transmissions and approved manual transmissions. Drain and flush with the correct oil as soon as possible or you will be rebuilding again soon. The ATF will just cause the transmission to wear out faster and shift oddly in all the gears, it shouldn't have affected only 4th. I'd take it apart again and see if you missed anything or if something else in the transmission is out of spec.