All you are doing is taking off the very thin layer of yellowed exposed surface, which after a few years will yellow again anyway. The bad part is you can expose blotchyness and mold marks underneath (from the injection process) that look weird. I don't hear about people spraying their newly whitened machines with UV protectant film to keep the process from starting again.
Personally I like new looking machines, but other then a non abrasive scrub with oxy enabled soap I don't bother with a full chemical clean. As long as its not dirty and works I am happy, and I can do a "chemical peal" at some later date if I feal like it.
If you plan of cleaning and flipping it on ebay, in the short term it is probably worth the effort on rarer machines people want (like an SE/30). But just like how cleaned rare coins are worth much less then toned untouched ones I think original macs in the long term will be worth left more as is (if you are looking to profit eventually).
Personally I like new looking machines, but other then a non abrasive scrub with oxy enabled soap I don't bother with a full chemical clean. As long as its not dirty and works I am happy, and I can do a "chemical peal" at some later date if I feal like it.
If you plan of cleaning and flipping it on ebay, in the short term it is probably worth the effort on rarer machines people want (like an SE/30). But just like how cleaned rare coins are worth much less then toned untouched ones I think original macs in the long term will be worth left more as is (if you are looking to profit eventually).