In article <Qpv2b.282660$hOa.74350
@news02.bloor.is.net.cable.rogers.com>, sbigelowPOV@rogers.com says...
>
> "Joseph Wind" <jpg@gif.com> wrote in message
> news:bic7ae$fis$1@sun-news.laserlink.net...
>
> > Technically, The difference is what weight you use. If your V-8 runs on
> > 20w50, and you decide to put in 5W50. You'll definitely see an
> improvement,
> > dino or synthetic.
>
> Really.
>
> Why would that be?

W does not equal weight, it stands for winter. The point he was trying
to make that the thinner the oil the less it slugs down the engine.
(0w30 is thinner than 10w30.) The problem is if you go to thin the oil
just spills off the bearing surface which may not lubricate and valve
noise will also increase. Its best to stick with the grade of oil rated
for your car and climate.