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From: jim on 4 Jan 2010 09:17 Vic Smith wrote: > > On Mon, 04 Jan 2010 06:04:44 -0600, jim <"sjedgingN0Sp"@m(a)mwt,net> > wrote: > > > > > >> Worse thing is when I've heard the rings scraping the cylinder walls > >> on my 350 with a dead cold start-up at -27 F. Very bad sound. > >> Ran straight 30 weight oil then. > > > >It is remarkable that it started with single grade 30 wt oil. A lot of > >the noise you heard was probably the oil pump. At that temperature the > >oil pump can suck the oil in but the oil in the pan won't flow to > >replace the oil that has been drawn, so you very quickly end up with the > >pump sucking air thru a hole in the oil. The oil surrounding the hole is > >too stiff to flow into the hole. > > > Straight 30 weight oil was commonly used here 30 years ago. > Winter and summer. And that was record cold. 30 years ago was 1980. Multi-grade oil had been around for more than 30 years at that point in time. > I suppose some went to 15 or 20 weight for the winter, or went to > multi-grade earlier than I did. People who used straight weight oil mostly changed to 10 weight for winter when temps well below zero were expected. Typically when using straight weight you changed oil at least 4 times a year with the seasons. Very few engines are going to crank fast enough to start at -10F with straight 30 weight. > But for years I just bought Quaker > State 30 weight. No real reason other than I had no lube problems I > was aware of, so I stuck with it. > I generally buy 15W40 now, any name brand that's cheapest. > If we suffered those kind of temps often I'd go to Mobil 1. > But we don't. > I highly doubt what I heard had anything to do with the oil pump. It's almost impossible that the oil pump wouldn't be making some noise since it would be sucking air if the oil had sat long enough to be cooled down to -27F. You can't pour 30 weight out of a bottle or can at -27F. But strange noises can come from lots of things at that temp. > My ears are pretty good for engine sounds. Closest sound to it I've > heard is all the cam bearings wiping in my 352 when I botched the > rebuild. > But no bearings were wiped. > Too loud for any bearing anyway. This was LOUD. > I'll stick with rings on cylinder walls. > Might be wrong though. It only lasted a couple revs. > > --Vic
From: cuhulin on 4 Jan 2010 12:45 I need to find J.C.Whitney's toll free phone number and ask for a snail mail catalog.I think J.C.Whitney sells some manual choke kits.Might be a few other things I want to order too. cuhulin
From: phaeton on 8 Jan 2010 21:19 I guess while we're on the subject... I see a lot of idling empty SUVs in parking lots this time of year. Malls, grocery stores, department stores, movie theaters, etc. I presume that they do this so that 1) they can avoid the engine wear on startup and 2) they don't have to wait for it to warm up for the heater to work? -J
From: cuhulin on 8 Jan 2010 21:50 Nobody in the vehicles, and the engine is running.People who do that are just begging for their vehicles to be stolen. On the web, How to thwart car thieves cuhulin
From: hls on 9 Jan 2010 10:54
"phaeton" <blahbleh666(a)hotmail.com> wrote in message news:13c54004-d739-4beb-91fb-c5f487798476(a)u41g2000yqe.googlegroups.com... >I guess while we're on the subject... > > > I see a lot of idling empty SUVs in parking lots this time of year. > Malls, grocery stores, department stores, movie theaters, etc. > > I presume that they do this so that 1) they can avoid the engine wear > on startup and 2) they don't have to wait for it to warm up for the > heater to work? > > > -J Probably to keep it warm. Bad idea. The engine corrosion ("wear" ) business is technically correct, but its impact is overstated. |