Ok I bought this as a impulse buy to try. Came out of bottle like water with a Ultra dark blue color. Added to fresh fill of 0W20 QSUD in a Subaru FB20. Lots of of valve train noise at idle compared to my old DOHC EJ25.
At 300 miles on oil noticed no change in engine noise.
700 miles: Slight noise reduction thought that was as good as it would get.
1000 miles: Hmmm engine is getting quiet.
2000 miles: Wow! engine is quiet. Valve train completely quiet
Increase in gas mileage: No
Increase in power: None noticed.
Picking up a wix analysis kit with my next online parts order, interested on what UOA will look like. Will refill with another 0w20 QSUD at next scheduled and see how long valve train stays quiet.
At 300 miles on oil noticed no change in engine noise.
700 miles: Slight noise reduction thought that was as good as it would get.
1000 miles: Hmmm engine is getting quiet.
2000 miles: Wow! engine is quiet. Valve train completely quiet
Increase in gas mileage: No
Increase in power: None noticed.
Picking up a wix analysis kit with my next online parts order, interested on what UOA will look like. Will refill with another 0w20 QSUD at next scheduled and see how long valve train stays quiet.