First bit of welding ever

[falling-out-with-my-car]

Hi,
My 1998 S2 Xantia estate needed an offside rear sill repair this year, the first bit of welding for a 16 year old car.

I am planning to flush the sills with Waxoil very soon but I am wondering if it would be acceptable for future MOTs
if I drilled some holes in the top of the sills on the doorsteps and put in grommets so that I have access to the
inside of the sills to apply wax-oil through.

any thoughts please?

regards

Nigel..

[exect]

You can gain access without drilling holes in the doorstep by removing the seatbelt bolt on the inside, and in my case the hole was already through to the sill but you may have to drill.

[falling-out-with-my-car]

I was initially thinking about pulling back the carpets and drilling a 6mm hole in the back of the sills behind the carpets.
This would give me a hole big enough to get a high pressure small gauge tube into.
I'm not to sure about disturbing the seat belt mounts whether its a great idea or not I'll release them and feed them with some lube for 24 hours first. Thanks.