Lifter tick is now completely gone. With the windows down, I no longer hear the lifter sound at all. Before this test, I could visibly see varnish on the cam lobes, but now the lobes are shiny and clean. I also picked up 2 more MPG around town, for some of the best gas mileage ever.
I am going to continue using it for the next 500 miles and then change the oil back to Mobil 1 5W-30. I am also going to try running this through my Amazon next. Kreen is a great product and for $14 plus shipping, it completely fixed the problem.
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1959 Volvo Amazon 121, 1998 Volvo V70R AWD
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