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Farmall & IHC Tractors Discussion Forum
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Synthetic Oil

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Tractor Shed Bi

02-04-2007 17:21:32




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What about using synthetic oil in these old tractor engines? I've had tremendous success using it in my truck, car and auxilary generator but never used it in an old tractor. Anybody had experience with it in a SA or any older model tractor? I've just overhauled the C113 engine on my 48 SA and thinkning about trying it.

bk




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dej(JED)

02-05-2007 05:35:56




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 Re: Synthetic Oil in reply to Tractor Shed Billy, 02-04-2007 17:21:32  
Don't use a low ash diesel oil in a gasoline engine. A gasoline engine oil needs ash for lubrication. Engine oil dillution from gasoline will destroy the low ash oil. It is made for a diesel engines only. Yes, you won't see damage right away. It take a while to wear at the bearings.



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Janicholson

02-04-2007 19:42:18




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 Re: Synthetic Oil in reply to Tractor Shed Billy, 02-04-2007 17:21:32  
Break it in with a straight Wt oil, 20W if pretty cold. Vary the load and RPM from idle to 1/2 power for about an hour, then variable across all loads and speeds for 15 to 20 hrs Then switch to a diesel grade Synthetic as Steven indicates, JimN



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Steven@AZ

02-04-2007 17:51:16




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 Re: Synthetic Oil in reply to Tractor Shed Billy, 02-04-2007 17:21:32  
I run Mobil Delvac 1 5w-40 in my '42 H that I overhauled and broke-in on IH low ash 30 weight.

No issues yet with 170 hours or so on the overhaul and once a year oil changes.

I believe you need to use something like Delvac that is rated for diesels that has (I think) extra zinc in it that a flat-tappet camshaft needs. Or maybe it's something else, anyway the new gasoline rated synthetics aren't real great in an old engine because lots of additives that flat-tappet cams need have been taken out because they take out the catalytic converter on newer vehicles. Check out bobistheoilguy.com for the specifics, I'm not real well versed on this.

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