Is it really the same oil as the engine? Because the drain plug is way back under the transmission basically. The whining sound and burning smell that happens in all gears except fourth for me started RIGHT after I changed my oil.

I think it may have to do with the synchronizers/dog collar because if you try to put it in gear lightly without the clutch you can hear a louder noise than it used to be, and it's more grindy.

Is it bad to use a synchronous transmission like a non synchronous crash box transmission?

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1994 Ford Ranger Extend Cab. Red, two wheel drive, standard transmission, 2.3 liter four cylinder engine.

there are 2 bolts on the side of the trans, unscrew the top bolt, and stick your finger to check level

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2012 mustang premium v6 pony package
702 crew
XBGT:IKONIK MOPAR

Nope, they are different. If you have an owner's manual, check the fluid specification. Some older Rangers use gear oil, mine uses Mercon (ATF).

"Speed shifting" generally is not the best way to shift gears either. That's what the clutch is there for. If done wrong over a long period of time, I suppose you could damage your syncronizers. Grinding gears due to mistiming is certainly not good in any case.

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Sgtsandman's Work in Progress
2011 Ranger XLT, 4X4, 4 door Super Cab. 4.0L, 5 Speed M50D-R1HD, 3.73:1, 8.8" open differential, Jason Pace cap
2019 Ford Ranger STX FX4, Super Crew, 2.3L Ecoboost, 10 speed automatic, 3.73:1 with rear locker, Leer 100XR cap

um yea make sure you check the manual. its either mercon atf or 80-90 gear oil. mix em up and you will know you did. top bolt, middle of tranny on drivers side to check