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Oil Grade - What about 40wt?


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#1 MichaelBeck ONLINE  

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Posted May 05, 2015 - 09:22 PM

Currently running SAE 30 in the tractor, and it is burning a bit and weeping a bit around the back of the engine, neither to be unexpected for a non rebuilt 50yo engine. Any foreseeable problems in running a slightly thicker grade of oil, maybe 40wt?  We don't see to much in the way of cold temps here - climate is pretty mild. Even a multigrade maybe? What's the consensus?

 


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#2 Rainier OFFLINE  

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Posted May 05, 2015 - 09:54 PM

Not sure what engine you are running, but many of the engines have a oil sling that does just what it says. It slings oil. If you run a heavier oil it will not sling as well and could do more damage than good.
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#3 boyscout862 OFFLINE  

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Posted May 06, 2015 - 03:22 AM

Leaking areas may be caused by loose bolts. Check them. Smoking can sometimes be reduced by adding Marvel Mystery Oil to the gas. Over time it will slowly clean the combustion camber, valves, and piston rings. Six months in an old car and it has stopped smoking completely for me several times over the last 48 years. Good Luck, Rick


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#4 Bolens 1000 OFFLINE  

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Posted May 06, 2015 - 06:51 AM

I would not go to a thicker oil as you'll likely do damage to the engine, especially on an oil slinger model.

 

 

If its leaking in the rear, check the belt guide bolts, one of them is straight through the block and will leak like crazy if loose or missing.


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#5 MH81 ONLINE  

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Posted May 06, 2015 - 06:55 AM

I love my 30 wt, but would try not to go heavier as the engines weren't designed for that.
Just my $0.10
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#6 bolensbolens OFFLINE  

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Posted May 10, 2015 - 12:53 PM

I would not go to a thicker oil as you'll likely do damage to the engine, especially on an oil slinger model.

 

 

If its leaking in the rear, check the belt guide bolts, one of them is straight through the block and will leak like crazy if loose or missing.

Hmm good info! I also have this issue; the guy I bought it from had told me to just keep an eye on the oil level  :poke:

 

The interesting part about my 'weeping' is that ..it just weeps a lil bit after each use.. and its not a continuos weep.

 

I can take pics of the underside if that would help diagnose..


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#7 Bolens 1000 OFFLINE  

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Posted May 10, 2015 - 07:09 PM

Another thing to check is the seal at the governor lever.

If you post a couple pics I may be able to find a problem area



#8 bolensbolens OFFLINE  

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Posted May 11, 2015 - 01:52 PM

Another thing to check is the seal at the governor lever.

If you post a couple pics I may be able to find a problem area

 

Here is where it leaks on the underside after riding using implements etc.. 

 

No smoking occurs though.. 

Attached Thumbnails

  • photo 3-1.JPG
  • oilplug.JPG

Edited by bolensbolens, May 11, 2015 - 01:58 PM.


#9 Husky OFFLINE  

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Posted May 12, 2015 - 05:28 PM

If its a tecumseh then also check the crank case breather tube they leak around that tube a lot where it goes into the valve box on top of the engine or out the tube if the vent is not working right. Just a thought.



#10 DougT OFFLINE  

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Posted May 12, 2015 - 08:18 PM

Hmm good info! I also have this issue; the guy I bought it from had told me to just keep an eye on the oil level  :poke:

 

The interesting part about my 'weeping' is that ..it just weeps a lil bit after each use.. and its not a continuos weep.

 

I can take pics of the underside if that would help diagnose..

It could still come through the threads. The expand and contract of the running and cooling could affect it too. How often do you have to add?



#11 DougT OFFLINE  

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Posted May 12, 2015 - 08:22 PM

Do you clean it good between every running? If that's been building a while, go to the top of the leak area and look for a clean area. It does look clean around the one bolt head but the oil is higher than that. That bolt could still be loose though.






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