I wouldn't worry to much about it. I have used WD40 Chain cleaner and WD40 Chain lube for most of the life of the bike. I got close to 18,000 miles out of the OEM chain. When it got too stretched out, I replaced it. No big deal. Everyone uses something different. My son uses WD40 to clean his chain and Dupont Teflon lubricant. That seems to work well too.
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