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What weight oil for a B during winter and summer u

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TOm H

01-25-2005 19:43:30




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I tried starting my b over the weekend. Battery was fine and had plenty of charge to turn the starter. However, it was very apparent that I had too heavy of a weight oil. The motor seemed like it was turning in molases ( very slow revolutions) What is the ideal weight of motor oil for winter and summer use? Is there a weight that I could use for both and not have to worry about changing it for the seasons? Thanks for your help in advance. Tom

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Gordon in IN

01-26-2005 21:50:01




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 Re: What weight oil for a B during winter and summ in reply to TOm H, 01-25-2005 19:43:30  
I have had very good performance with 10w 40 Synthetic (Mobile 1) in a tight, rebuilt 1951 AC WD. Check the "pour point" on this oil. I hand cranked this tractor over this past Christmas season when its battery was down. It was not difficult to hand crank and it has a 7.2 to 1 compression oversized piston/sleeve set in it. It started on the second pull of the crank after the ignition was turned on. Once the battery was charged the starter literally "spun" the engine and started it very quickly even when "cold". I have also had good performance with synthetic 15w-50 in a 1943 AC WC that is well "run in" (read "worn"). It also "spins" and starts easily when cold. The synthetic oils seem to hold oil pressure better in both of these engines in warm/hot weather when worked under a load. The additional cost is worth the ability to easily start in cold weather. The better oil pressure in hot weather is also a nice advantage. The best was when the 1943 (Orange) WC started on a very cold morning a few years ago and I used it to pull start a neighbors "nice, large, nearly new" John Deer (Green) Diesel Tractor. It was very cold and we pulled the "Green" Tractor over a mile before it started. It was all the WC wanted just to pull the "Green" Tractor, but it did pull it. I sure was glad that I was able to help my neighbor. He is a good neighbor. He seems to like "Small","Old", "Orange" Tractors better now.

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Tom H

01-31-2005 19:49:11




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 Re: What weight oil for a B during winter and summ in reply to Gordon in IN, 01-26-2005 21:50:01  
I just wanted to say thanks to eveyones responses and help. You all have helped me out. Thanks again.

Tom



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steve(ill)

01-26-2005 20:13:09




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 Re: What weight oil for a B during winter and summ in reply to TOm H, 01-25-2005 19:43:30  
stick with the 10W30 motor oil. if you use that weight in your truck, that would be a good thing to stay with. synthetics are good oils, but not needed in a 50 year old tractor. weigh the cost vs benefits. unless you can not get it to crank with 10w30, but i doubt that.



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John (MO)

01-26-2005 10:25:14




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 Re: What weight oil for a B during winter and summ in reply to TOm H, 01-25-2005 19:43:30  
Synthetic can get past old seals so I would think twice before switching to it in an older engine.



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Doug in OR

01-26-2005 12:18:59




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 Re: What weight oil for a B during winter and summ in reply to John (MO), 01-26-2005 10:25:14  
This may have been true in the 70s, but is no longer the case. Modern synthetics are as good as, and even better at protecting the seals as their mineral oil counterparts.



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Doug in OR

01-26-2005 06:51:35




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 Re: What weight oil for a B during winter and summ in reply to TOm H, 01-25-2005 19:43:30  
Bush and Pine covered it. I'd use 10W-30 year-around. You can get by with 10W-40 if you are south of the Mason-Dixon line. Synthetic does flow more readily in cold weather, but can be more expensive if your tractor uses oil.



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BushogPapa

01-25-2005 21:08:29




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 Re: What weight oil for a B during winter and summ in reply to TOm H, 01-25-2005 19:43:30  
10-30 or 10-40 oil will work fine...I prefer Castrol in a broken-in engine..you may prefer another brand. In winter, I like to add a Pint of Rislone to thin the oil a little, and that cleans out the engine during winter use, and change it in the spring.. Marvel Mystery oil (one pint) would work well, too. I wouldn't want to use the "5-30" oils in it unless you are using it in Sub-Zero temps often. AC's are typically "Cold-Blooded" in the winter, and need to warm up some..yes, they do crank like they are "stiff"...especially if you are hand-cranking them..!!! Ron.

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ed brown

11-03-2005 15:53:14




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 Re: What weight oil for a B during winter and summ in reply to BushogPapa, 01-25-2005 21:08:29  
What is the safe way to hand crank a 1939 B?
To prevent getting a broken arm. Thanks for any info. Regards, Ed Brown



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Pinekone

01-26-2005 05:10:11




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 Re: What weight oil for a B during winter and summ in reply to BushogPapa, 01-25-2005 21:08:29  

I have used synthetic oil in my WD-45 for 2 winters and summers now.... had the same starting problem.... cured that right up.... makes one turn now and is running.... even in below zero weather.... the oil pressure holds 3/4 up on the gauge even when working it in the summer....



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