A while back I posted needing advice about the Subaru piston slap issue and burning oil with smoke on start up. A few of you posted to try Defy and a moly additive. I can tell you unconditionally this worked! I switch up and went from 5w30 to 10w30 and added Liqui-Moly 2020. It's been 3 weeks of daily driving and the piston slap is all but gone, the smoking only happens slightly if I have to really get on the gas.
First thanks for the advice and second I am a believer in QS Defy now.
This is why this page is here and I try and send anyone that needs help to this site.
First thanks for the advice and second I am a believer in QS Defy now.
This is why this page is here and I try and send anyone that needs help to this site.