AO Platinum Member
Join Date: Aug 2003
Location: London, England
Re: Crunching into 3rd
Yes you are just beating the synchromesh, try changing slightly slower as wrinx said.
Better full synthetic 75W90 gearoil may help, but make sure it is designed for synchromesh gearboxes (most race gearoils are not) and never add those "super slippery" additives (or any additives for that matter) to the gear oil because they will prevent the synchromesh from working and it will crunch every gearchange.
I'm using Redline 75W90NS full synthetic gearoil.