Thanks to all on the tips for syn oils. I should of mentioned I used regular
10-30 for the until the first oil change, can't remember mileage but I'm
guessing 500 miles. The smoking was not noticeable to me for the first 12K. I
think I will try regular oil.
Thanks,
Grant
ADvent@thuntek.net wrote:
> Grant, syn oils are so slippery that it can work past areas that otherwise
> would not occur with regular oils. Syn oils will leak out sooner than
> regular oils too. Try a using all regular oil before you tear into it. It
> might be just the oil. My truck sat for 5 years before I bought it. It
> smokes like yours, too and out the tailpipe. The smoking seems to taper off
> with use. I will give it a 1,000 miles or so before I tear into it. BTW, my
> truck's 235 is a fresh rebuild, as well.
> new mexico jim
> 50 ½ ton
> 51 two ton
>
> Grant Galbraith wrote:
>
> > 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
> >
> > oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
>
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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