Originally Posted By: demarpaint
Originally Posted By: Max_Wander
Originally Posted By: Ndx
Im looking over this forum for long time ... And I wonder why some peoples are swearing that some oils are making their cars quieter and other oils are making car noisy ?
Because that's what happens. I, like some people, could cry 'placebo effect' all day to try and excuse my not knowing why, but it would be ludicrous to call all these people, including myself, liars.
Max I think you're right. People who frequent this board are people who really care about their cars, and are in tune with different sounds and what's going on with their engines. I think we can pick up on slight changes and its not a placebo effect. If it is then we're all nuts!
OK, I think I can hear some difference in engine sound on different oils... BUT...
a) I do not believe that less sound necessarily means less wear is taking place, and
b) I don't believe that I (or anyone else) can really make an accurate comparison of a sound I heard an hour ago to a sound I'm hearing now, let alone compare the sound I heard driving last week to the sound I hear driving at the same spot today. Its just not a quantitative measurement. Now if someone were to instrument the engine with sound pressure level meters and post some results, and we could be sure that the measurements were un-contaminated by background noise, fan clutches running the fan at different speeds, differences in ambient air density, etc. than we could say something conclusive.