100 grams ?
That's a LOT when it needs to be added in ppm quantities - even 1700ppm
Do you plan to do a lot of testing with it ?
If you had to buy more than you really need, I wouldn't mind to give it a shot and buy 10 grams from you for testing purposes in Hägar.
Oil swaps are only 3,7L, and I won't add more than 1g/kg oil i.e. 1000ppm - that'd mean enough for 3 oil swaps.
The 1.6D has a small extra oil filter for the turbo, but that's prone to clogging.
It might already have been removed during servicing as quite a few turbos have blown due to oil starvation, but you never know.