Washing VW nylon covers

[altvic]

The VW made nylon loose covers in grey have never been cleaned, and there are no washing instructions. Any advice on washing machine temperature / powder appreciated.

 

[Abracadabra]

Our VW 'loose' covers are due for their first wash. Ashamed to say nearly 10 years...
I am going to use NikWax Tech Wash as the material wash described as 'Gortex' by the main dealer supplier.
I will let you know how it works, unless you come up with a better answer sooner.