Quote:
Originally Posted by aureliusmax
i had really bad smoke at high vacuum on a chrysler 4.7 magnum... used at-205 treatment four times, one on each oil change... never helped one bit with blue smoke at high vacuum and idle.
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The solution is found in your statement above: you obviously need to avoid contritions that create high vacuum:
As exemplified in this movie clip:
(Skip to 1:30 timeline if the URL link fails to do that automatically)
https://youtu.be/y4UhOeYYXAA?t=90
"All I can advise is never drive her under 3000 RPM in a forward gear ... ever."
Back to seriousness, if I had this problem and wished to punt the inevitable VSS replacement, I would take off the VC and apply the AT-205 directly to the seals, put enough on that a small puddle formed that can capillary wick through to any part touching the stem and maybe do 2-3 applications like that over a day time before putting the VC back on and add a bottle of 205 to the oil. If that doesn't help it's time for the operation.