On Sun, Aug 8, 2010 at 3:00 PM, Karl Wolz <wolzphoto@q.com> wrote: > My recollection, FWIW, is that the oil started frothing just above the full > mark; the admonition being to definitely not overfill, and perhaps a bit > under the mark would be better than over it. > > This turned into a discussion on the lack of a plate in the engine to "put > a > lid on the oil". I do not recall what the plate is called, though I'm sure > someone else will. > > YMMV, > > Karl Wolz > Oil frothing is a problem in some motors. When I raced a Porsche v8 928, one of the shortcomings of this motor in stock form showed in frequent #2/6 main bearing failure at high sustained RPM...This was traced to, among other causes, oil frothing. One of the guys took a small camera and actually documented how this happened on a test mule car.. Some oils were worse at this than others, as shown in his videos. One oil said to contain an aggressive anti-frothing agent is Amsoil. No 2-6 bearing failures are documented with motors running this oil...small numerical sample, given. Lots of variables involved, too... Many different windage devices were tried, oil/air separators incorporated into the breather systems, etc. All specific to that motor so no use to a vanagon...but how about just a simple test filling with Amsoil and try that? See if your Oil Pressure stays up at speed. Expensive stuff that Amsoil and maybe just a marketing hype...but my friend's videos show it working and I always used it, except one time when I blew up a motor at Thunderhill Park while running Mobil One...just a coincidence, I am sure. Don Hanson |
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