Hi again.It is a near match, but the pentosin is so cheap that I wouldn't bother.
I read the manual (if all else fails... :hihihi, and it said that LHM was ok.
It's not so much a question of price, as of availability. I've discovered a leak in the SLS, and a low level of Pentosin in the canister. So I was quite hooked on getting it topped up, and given that Pentosin is seriously hard to come by in Denmark (tried quite a few of the "good" places today), LHM is much easier.
I've ordered 2 litres of Pentosin for when I get it fixed, but boy was I glad to get it topped up with the LHM.