Outer Limits 4x4 Board

Hi there,

Some time ago i did an engine swap into my feroza and i noticed that after that i have a problems with shifting 2nd gear when the engine is cold. Well..i think it is related with the swap i did but i don't remember any problems before swapping. It only occurs when a car is cold, for example in the morning. After 5-10 minutes everything works fine as it's going warmer. I am wondering if:
- it's something with a clutch or sth?
- i thought that it is also time for changing gearbox oil and maybe that is the cause.
- could it be also because i buy a Feroza in August (20+ degrees Celcius outside) and all was fine, then make a swap and now it's a bit cold (~ 0-5 degrees) so the oil has to be get warmer?

What do you think it could be? I also know that previous Feroza owner that i bought this car from filled the gearbox with the 85W-90 oil (mineral) whereas Daihatsu advices 75W-90 which is a syntethic oil. So i wonder if this also can be the reason of my problems.

Do you have any suggestions or are familiar with this problem?
Also an important question: can i change an oil to synthetic 75W-90 now? I've been advised with the Castrol Taf-X oil but i am not sure if i can migrate from mineral to synthetic oil.

Any feedback would be appreciated
Thanks.

Lukas

I bought mine in December and found once the cold weather hit I was having trouble with second and third gear changes when first starting. You could try something like Castrol VMX80 which is designed for cold shift problems- but I found that only made a small improvement.

I'd recommend trying one of the Redline Oil synthetic fluids. I'm using the Shockproof Lightweight and it's done wonders for it.

check clutch adjustment, if its hard to put in gear or wont go in unless you slow down a tad, adjust cable/arm clearance.