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Tractor Talk Discussion Forum

smoke and synthetic oil

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mike wallace

03-05-2008 19:16:47




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I recently purchased a 1957 ford 600 that I am trying to put back in service. It had been sitting for about 1 1/2 years; the guy I bought it from had just bought it himself and didn't know much about it. I rebuilt the carb, it has good compression, and was easy to get started. Problem is there is a little smoke (bluish white) Most likely it is burning some oil, I don't know if it is seals or rings, It may stop after running it for a while. I am going to change the oil and was thinking about going to synthetic. I was told that the molecules in synthetic are larger and more uniform in size than in the standard oils, therefore they are less likely to find their way past older seals. Is there any truth to this? Any advise on this?

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Texasmark

03-06-2008 14:30:23




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 Re: smoke and synthetic oil in reply to mike wallace, 03-05-2008 19:16:47  
You either have crudded up parts or worn out parts. If crudded up a good solvent like Sea Foam will loosen stuck rings, valves and the like. You will be utterly amazed at what this product will do for any internal combustion engine....auto parts store has it.

If worn out, you will need a higher viscosity oil which has larger molecules which will lodge in the rings better and reduce oil consumption. Course now the major oil co's are offering oils for high mileage cars. Might check this out as long as you conform to the API ratings for S (spark combustion) and C (compression combustion).

Mark

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Mike M

03-06-2008 07:29:07




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 Re: smoke and synthetic oil in reply to mike wallace, 03-05-2008 19:16:47  
In my experience when I tried synthetic oil in something it STARTED smokeing. None of my stuff is new and it isn't worn out either. Regular works in them fine.



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big red 1

03-06-2008 07:28:44




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 Re: smoke and synthetic oil in reply to mike wallace, 03-05-2008 19:16:47  
Daniel nailed it.
A few years a ago I used to work for Penske Automotive.The main goal month after month was to sell Mobile 1 synthetic oil changes,needless to say we were fed plenty info about the product then needed.-Great product for preventing problems-Butit wont solve them.
Good luck
Randy In Iowa



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Goose

03-06-2008 06:46:00




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 Re: smoke and synthetic oil in reply to mike wallace, 03-05-2008 19:16:47  
I bought a Chevy Caprice once that was getting about 200 miles to a quart of oil. I bought it assuming I'd have to overhaul it, and went ahead and built up a fresh 305 engine.

Before I got around to switching the engines, my wife began commuting 20 miles open road each way to work. Within a month the Caprice quit using oil altogether. Some old geezer had been putting around town with it, and it was just sludged up. A few thousand miles of open road cleaned it out.

I'd say run the truck awhile and don't get in too big a hurry to do anything major.

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daniel henebry

03-06-2008 03:59:58




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 Re: smoke and synthetic oil in reply to mike wallace, 03-05-2008 19:16:47  
This is my understanding of synthetic oils. The synthetic part of the oil won't clean up the motor. Most synthetics have an increased quality or a larger value of cleaning additives added to increase the life of the oil. The reason being that they are designed for longer hours of use or less oil change intervals. Synthetic oil are better in that they are less likely to break down from heat and provide more or better lubricity at higher temps and /or lower temp build up at the friction points of the motor ie bearings and cylinder walls.

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dieselpaul

03-05-2008 20:44:32




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 Re: smoke and synthetic oil in reply to mike wallace, 03-05-2008 19:16:47  
Nope--using syn. oils won't help the smoke. best luck on putting this '57 back into service--light duty l hope] paul



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buickanddeere

03-05-2008 20:34:16




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 Re: smoke and synthetic oil in reply to mike wallace, 03-05-2008 19:16:47  
My first car was an in town short trip putt putt. All sludged up but didn't burn oil. Some hard highway miles later, a couple of oil changes and she was burning oil. Being short on bucks I just kept driving and adding oil. A few months more and oil consumption dropped and mileage improved. I'm guessing it went from sludge sealing the cylinders to no sludge and stuck rings. Then running fine as the rings shook loose and started to work and seal. A loose oil burning engine will soot up and carbon less. If low ash CF-2 lube oil intended for two stroke Detroit diesels is used. New valve seals won't hurt in any case.

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IH2444

03-05-2008 20:14:45




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 Re: smoke and synthetic oil in reply to mike wallace, 03-05-2008 19:16:47  
The only reason synthetic might smoke less is that it has a higher flash point than regular oil and might burn less. I have an old worn out kohler that I put synthetic in, it does smoke a bit less, but now slobbers out the muffler. Need to rebuild it someday....



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trucker40

03-05-2008 19:56:24




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 Re: smoke and synthetic oil in reply to mike wallace, 03-05-2008 19:16:47  
I dont think its a good idea to put synthetic oil in an old motor thats full of sludge.It will start leaking everywhere.I dont know about the molecules but it looks thinner to me when its hot.If you rebuild a motor and have it boiled out,put new seals in it(better check if the seals will work with synthetic)and put synthetic oil in from the start it would be fine. You may want to know this,years ago they made synthetic oil to replace gear oil,80 weight as I remember.A driver was driving,had a seal go out and got it fixed on the road.Somebody added synthetic oil to the mineral oil in the transmission and it ruined the transmission.The synthetic gear oil was not compatible at all with mineral oil and it sort of congealed or tuned real hard inside all the galleries of the transmission.I tore the transmission apart and tried to save as much as I could,but about all that was left was the case and it had to be steam cleaned.I dont think its still like that,and I have not heard of a motor doing that,but its not a good idea to mix them I dont think.You could never get all the old oil out of a moter very easy without tearing it down and cleaning it in a hot tank.

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mattd

03-05-2008 19:41:01




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 Re: smoke and synthetic oil in reply to mike wallace, 03-05-2008 19:16:47  
the best thing for it is to work it hard for a while and get it good and hot. that might clear the smoke up. as far as the synthetic oil, what ive found is the additives that are in sythetic oils are good at softening sludge up and getting rid of carbon build up. basically cleaning the engine out. therefore on an engine that old the sludge, dirt, carbon all that good stuff is sealing the engine from the inside out. get rid of that and its gonna leak. if it was me i would get some good conventional oil and you could get a thicker viscosity like 10w-40 or 15w-40.

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