Weckedy
Flush
I haven't used Weckedy's oil-in-water method on TRKs (or any other chips), but I have cleaned and oiled a lot of TRKs. I can't imagine a problem using the oil-in-water method provided the water is not too hot and you drain and dry promptly. I'm going to give this method a try the next time I need to oil a batch of chips.
Actually this is @Trihonda's method. I was checking for viability to use on my TRKs.
Good old fashion elbow grease would be the best answer then.