If the gearbox oil is the wrong type/grade then its most likely that it will be difficult to engage gears whilst the car is cold. So I doubt the oil is to blame.
You say the clutch is new? Did this problem start after the clutch replacement? If so, it could be misadjusted shifter linkage, or the clutch is not disengaging fully.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.