There are very few people that fix aluminum radiators I have a fluidyne and it was leaking where the rows meet the side.I emailed fluidyne about this and since a lot of guys have this issue with this particular year he said that they dont have the capability to fix them only specialty shops one was in Anaheim Robbie Gordon racing and the other one down south by San Diego this was said by one of the managers at fluidyne .I didnt fell like burning another 300 dollars so I tried the liquid stop leak and so far it hasnt leaked for the past month and its been over 90 degrees and no issues so try that just make sure your water/antifreeze is clean mine looks pretty clean even after I poured in the stop leak .
... I may try the stop leak on the fluidyne first and then if that doesnt fix it i will look into another Fluidyne or a Griffin radiator.
So anyone have any insight if its ok to use aluminum radiator stop leak with aluminum heads???