Inner sill 'slot'

[Syncrobaz]

Took the van for It's mot today----Passed with flying colours

I am obviously trying to keep the dreaded rust at bay so was wondering why there is slot at the top of the inner front sill?

Should there be a grommet fitted? or should I tape it after powerwashing and pumping the cavity with Dinitrol???

(Hil's trying to download a pic but failing miserably)

[max and caddy]

It's taped from the factory...then under sealed. I dunno it's purpose.

[Syncrobaz]

Thanks for the info, will do the same

No rust YET and prevention is better than cure

[syncroandy]

My guess is the slot's one of the points used for injection of cavity wax on the assembly line. Should certainly be kept covered IMO to reduce the amount of moisture-retaining sh1te finding it way into the sill.

[Syncrobaz]

My thoughts exactly especially when wading

I'm also toying with the idea of filling the cavity with expandable foam after cleaning and waxing!!

That'll keep the crud out and strengthen the outer sill when amongst rocks etc. Has anyone tried this??

[syncroandy]

Nice idea but I think the sill might need to be clear to serve as a drain point for water entering elsewhere, depending on the body type. I wouldn't want to risk trapping any water anyway. Also not great if any repairs are needed later. Better just to clean it out real well and apply a decent preferably non-tacky cavity wax. I find the dinitrol 3125 a bit tacky (so will tend to told onto dirt a bit), so I'm on the look-out for something else. According to some, VW used the Valvoline Tectyl range, but I've not found definitive info on exactly which ones, plus they're a bit hard to obtain in retail type packaging.

[jebiga41]

Nice idea but I think the sill might need to be clear to serve as a drain point for water entering elsewhere, depending on the body type. I wouldn't want to risk trapping any water anyway. Also not great if any repairs are needed later. Better just to clean it out real well and apply a decent preferably non-tacky cavity wax. I find the dinitrol 3125 a bit tacky (so will tend to told onto dirt a bit), so I'm on the look-out for something else. According to some, VW used the Valvoline Tectyl range, but I've not found definitive info on exactly which ones, plus they're a bit hard to obtain in retail type packaging.

Maybe lanolin the kiwi offroaders swear by it and you don't see many rusty sheep

[Syncrobaz]