Hello to everyone. First post. Just wanted input from people who know what they are talking about. I have a 2001 camry 2.2 liter with just over 94000k on odometer. Bought it with 40k a couple years ago. It runs great still as the day I bought it. Im just really concerned with all the news on this engine as well as other Toyota models as you know are prone to sludging up in reports. Been using pennz yellow bottle. Is it worth switching to a synthetic like pennz platinum to help pervent it? I noticed gold varnish on the oil cap on last oil change as well. Sorry if a thread like this exsists already.