Sorry also what brand oil would you recommend from experience? Also just to add the problem getting out of 5th sometimes disappears an it does help if you keep the stick pushed to the right as you are coming out if gear.

 

Update. Fixed. The gears was at the point where it was actually giving me a pulled shoulder using then. I went back out today and decided to give them a better greasing the linkages. Admittedly one is hidden so didn't get done well last time. The side to side linkage end movement on the ball joint was quite stiff when moving it with my fingers so I gave it a good wiggle to get it moving followed by loads of white lithium spray grease. Took the van for a drive around the block and the gears just now have no resistance and just pop in so easy could do it with a finger. So anyone with stiff gears and struggling to disengage from 5th and reverse remove your inter cooler and air intake pipes, wiggle and grease both linkages before ya spend a week panicking like me haha. Anyways whilst I was out decided to look under and where the clutch pipe meets the gearbox there was the tiniest drip of brake fluid. Clutch is working perfect and tbh the master cylinder and pipes etc look brand spanking new, is it worth trying to push the horse shoe looking clip in more or just leave it ? As don't want to disturb anything whilst its working lol.