hi all my gc8 is telling me to buy a new gearbox, I get a minor grating in 3rd gear prob 5 out of 10 gear changes. so I lived with it but now it spoils the car as its good in all other respects. I damaged it my self through been unable to engage gear ,but managed to get round this. is it selector fork I wonder ? is this inside the box? all other gears ok 1st a bit stiff on cold mornings. id try an oil change but I don't think that will sort.... what u think??? any ideas before I pull 700 out my wallet.

 

Castrol syntrans has worked wonders on my gc8 classic. it cured 1 to 2 crunch and occasional 2 to 3 crunch when hot. it lasted 3 years then happened again. I changed the oil again and same result; perfect.
worth a try at £45 quid.

 

ok that sounds promising, prob get some good stuff of opie oils , amazes me how u have to fill through that little tube ! I need a special torx key? do u know size please for gc8 box. thanks for info

 

https://www.scoobynet.com/drivetrain...universal.html


http://www.opieoils.co.uk/p-744-cast...universal.aspx

 

its the semi you want. and go for the Castrol.

 

no its a large socket jobby. need a special square jobby for the diff.

 

Will place an order and try this solution.

 

personally find the Castrol poor value for money and we have other options at better costs that will show at least similar results.........