gumout says to use it once a year (or every 15.000 miles), crc is supposed to be used 4 times a year (make that roughly every 3.000 miles) /
you can get one-n-done for pretty much half the price at walmart /
on the other hand, the crc has W A Y more Polyether Amine (3-7% vs 30-40%)
Interesting that the treat rate is 4x annually for the CRC product even with it's higher lvls of amines.
Question: are there, if any, downsides to using "too much" PEA during a oci?? I know using solvents (often used in cleaners) too often can be "bad" on some rubber types and can sneak past rings into the crankcase (but is there a credible concern given the dilution in fuel) but what about PEA itself??
Are there undesirable effects of PEA in the crankcase and is it a legit concern IRL application?