Forecourt embarassment - which fuel???

[abz 7001]

Suddnely realised we have been nonchalantly filling our new 87 998 cc mini up with Unleaded but she is a pre 89 model and no indication of "green pack" and no sign of cat (only about 20 quids worth of petrol in total and some of that was V power). Have popped in some fuel additive to rectify and will look out for LRP where available. Will this be enough to have damaged the seals or will we get away with it?

Suppose it could have been worse - could have been diesel!
Stuart & Dominique

[abz 7001]

Cheers for the reassurance - its an 87 so I think may have the soft seals.
Doesnt matter anyway today, the missus phoned and said she took the Lotus as it was too dark at 6.30 this morning to drive without any lights. Either way rocket fuel additive has been added.
Cheers
Stuart