Gearbox Problem

[NeilC]

Car: 2000 R34 25GT N/A

Trans: 5 speed manual

Problem: Extremely hard to get into gear when cold and very notchy till she is fully warmed up.

Car was brought into Aus in March 2013 and complianced and registered in May 2013. Presumed mileage on the paperwork I have was 70,331km. I am second owner in Aus. According to the paperwork I have all fluids were changed. I have checked the level in the gearbox and it it fine. However the oil put in smells like normal 80w 90 MINERAL oil which I know is not correct. I want to change oil but my question is what if any damage may have been done to the gearbox since I have had the car. Problem as I said is only when cold and motor running. Clutch feels good and seems to be releasing properly. Any thoughts appreciated.

[Hadouken]

You have wrong or crap oil in gearbox.

Drop oil with either

VMX 80 and nulon gearbox treatment

or

Smurfs blood

IT will only cost you 30 odd for the castrol oil and you will be able to tell if it is better. IF not then you have to do more fault finding. Taking gearbox out n shit

[junkie]

May need to bleed or adjust the clutch too. Could be a slight drag when fully released that puts a bit of pressure on the box?

[GTSBoy]

Does the clutch pedal have ~10mm of free play at the top of travel? If so, then it doesn't need adjustment.

[turboedsloth]

Sounds like wrong oil. I use penrite pro75/85 in mine and it works fine

[NeilC]

Thanks fellas. Will check the clutch freeplay as well but it seems to be fine. Pretty sure its the wrong oil. Smells the same as the 80m90 shit you put in the old ford and holden gearboxes and diffs. Stupid flaming Indians.

[GTRPSI]

Normaly its a sign that the oil used is too thick.

Years ago some Toyota boxes were like this from factory, very hard to shift and notchy when cold, the repair bulitin was to run a thinner oil in them.