Hi mate, for my Alvey's I use a combination of the following: Tortue, Platypus LoStretch, Schneider and Momoi (Jap). I've also used the cheap Jarvis Walker line range in the past and highly rate it too, never let me down. Just need to keep the gear in good order, wash down in freshwater after each trip and stored in dry, cool locations etc.
Cheers,
Spiro