yes I have had oil in container next to anti freeze ,they look the same ,so when dumping the smell touch feel is key .also marking the containers wich I had been known to forget to do when recycling oil an anti freeze, like said they can look the same but cant go in the same container,for me it was the green I have never had dex cool go bad so far ,but I am changing all my car this year weather they look good or not

 

I changed the elbows off the tensioner in about 40 min. Didn't need to take off head or intake. I am hoping for the sludge was just Dex cool. Everything seems to be good but time will tell. Runs great but still hesitation at idle only when warm. going to change plugs tomorrow and see if it changes. Coil packs where changed but still may need wires. One thing at a time for now. Could just need to be driven only 80000 miles and since purchased I only driven it 300 miles.

 

have you done the basics, air filter, fuel filter? also if it set for a long time you may have a buildup in the injectors and one is not liking it. might get away with some cleaner in the fuel. you would have to put up with it until it cleared,,, lol, if thats what it is. only way to really know is to have them flow tested and cleaned. actually not that costly if you take em out and install. injector shop can also flow match them so you dont get one or more thats not flowing the same, there is a range thats considered acceptable by the industry for oem but for getting the best performance the range is much smaller