My engine knock(piston slapping) went away after one week using the amsoil(was using 5w-30 amsoil),I switch to 10w-40,i was worry at first because it seem louder after i started to use it,But now it's gone.However it is hotter in florida now though,About 65-70 degrees in the morning.So i guess it doesn't take that long to heat up and i miss the slapping noise ,oh well.
Hey how bout you try that AMS-Oiler™ Pre Chargerand tell us how it goes/works.
