i am sorry to have to say this but, im doing so, so you have the true facts-not to shoot you down
-Mayhem's couldnt have caused a Galvanic reaction(i e be directly responsible), plain and simple mixing of metals does that.
Various retailers such as Koolance and EKWB have warnings about the mixing of metals and the use of silver,
although, if you ask others on this forum, they will also tell you that poor plating is to blame-i tend to agree with them.
-using any liquid without inhibitors would give you the same result if you mix certain metals.
That is why you should use Mayhems pastels and or X1 if you are using Mayhems products-these both have inhibitors and need no additives.
The X1 as you said should be changed around every 6 months, wheras the Pastel, can easily (and safetly) be used for up to 2 yrs-my pastel has been running for over 6 months and there are no problems whatsoever-even with the cheap Mastercleer tubing that its running through.
A while back, i posted quite a good amount of information on galvanic corrosion, complete with links to charts showing different metal compatability-just use the search function in this thread to find it
Edited by kkorky - 3/28/13 at 3:32pm