I have about 13 K on my 235 that was rebuilt with all new parts, bored
with new pistons, cast rings and bearings as well as cam, cam gears,
etc... I've noticed since I took it out of storage after a highway run
it will smoke from the breather tube and vents in the valve cover so
much so that smoke is billowing out from under the truck. I've always
used 5-30 Mobil 1 synthetic and changed it again, the 5th oil change
after noticing the smoke, still smoking. I know bad rings can cause
blow-by but wouldn't expect it on such a recent rebuild. Any Ideas?
Thanks, Grant
50 Chevy 3100
52 GMC 150
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