Sleeves in Big Bore shocks

[Ross]

I've got a set of a Kyosho Big bore shocks that came on my Vega RB5. I changed the oil tonight at Silverstone and there is a sleeve inside that brings them down to the same size as small bores.

My question is, would I run the same oils as big bores or small bores. The pistons are 3 hole and orange in colour.

Also there is no colour on the springs, is there any other way to tell which ones they are.

Cheers
Ross