Cleaning ability of QS Defy & High Mileage

[NormanBuntz]

I just finished a 4,500 OCI in my wife's Infiniti M35 (98K miles) using Quaker State Defy 5w-30 for the first time and a Fram Pro Synthetic 7317 filter. In the drained oil, which I extracted, I was surprised to see a fair amount of tiny gunk bits or sediment.

I never saw this stuff in any of the oil changes when I used Kendall GT-1 or my homebrew Quaker State synthetic blend. The car has had regular 4,500 mile oil changes since new.

Could the Defy have that much more detergent? Could the extractor suck out more gunk from the oil pan than you'd get through the drain plug? Ideas?

 

[ARCOgraphite]

Must be the extractor. Was some of the stuff silicone rubber would you guess?

 

[Kuato]

[insert 70s comment how Quaker State causes sludge]

If you got the extractor all the way down to the bottom of the pan, I can see how it might suck up gunk that was there...which leads me to the thought that if the gunk was disturbed, it might start moving around and fill up your filter more quickly.

I'm not sure that one run of 4500 miles would release that much extra stuff.