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Allis Chalmers Discussion Forum
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WD oil viscosity question again

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Charlie Free

04-06-2006 08:01:26




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Hello to all,

Well, I have run my first winter through with my "51 WD, running straight 20W oil. Now that it is beginning to warm up a bit here in Western NC, seems the ol" girl likes to smoke a little on the 20W. Even though the manual says 20W, what is the experience you all have had with 30W or maybe even multigrade in the WD"s? In colder temps, she would smoke a little during prolonged idling, but was smoke free at higher RPM. Now with the warmer temps, she smokes easily at idle, but running up her RPM she clears out and is smoke free. This is not smoke like I"m fogging for skeeters, just a light amount of blue.

Charlie in NC

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david joiner(ia)

04-08-2006 10:36:04




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 Re: WD oil viscosity question again in reply to Charlie Free, 04-06-2006 08:01:26  
It is my experience that a smoking problem can only be fixed w/ finding what the problem is.if valve guides,fix valve guides. if rings,fix rings. Multi-vis oil can slow the smoking,but not stop it.only fixing the problem can stop the smoking.



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Bill(Wis)

04-06-2006 20:09:17




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 Re: WD oil viscosity question again in reply to Charlie Free, 04-06-2006 08:01:26  
When multi-viscosity oil came along, my father started using it. (In WC and WD) 10W30 was all we could get. As I recall that was the vicosity range where it all started. We used it year around in all conditions, hot, cold, in between, heavy pulling for long hours, light loads with frequent shutdowns, etc. It worked just fine and still use 10W30 detergent oil in the '49 WD.



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Butch(OH)

04-06-2006 08:23:45




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 Re: WD oil viscosity question again in reply to Charlie Free, 04-06-2006 08:01:26  
Fixing oil burning requires just that, fixing. That changing oil viscosity will fix or even slightly improve oil burning and related smoke lies somewhere between a fallacy and urban legend, that"s my experiance and Ill stick to it. If the engine has recently started to burn oil after changing to a detergent oil after years on non-detergent changing back will not fix it either. More smoke at idle suggests to me that you have a valve guide problem, most likey the exhausts. A big puff of smoke at start up when warm also suggests valve guides. For the investment of a mere $7-8 at NAPA for a set of manifold gaskets you can be sure where the oil is coming from. Pull the manifold and look in the ports. Oiling from the guides in the amount required to cause smoke will be very obvious as the valve stems will be wet with oil.

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old

04-06-2006 08:22:10




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 Re: WD oil viscosity question again in reply to Charlie Free, 04-06-2006 08:01:26  
My self I run 40 or 50W in all my tractors in the spring/summer. I also have way to many tractors and some of them have the 50W in them all year long but they also don't get used in the cold months



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