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Massey Harris & Massey Ferguson Tractors Discussion Forum
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MF 245,0W40 syn oil, and leaks

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MF in Canada

02-16-2021 09:38:27




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Hi folks,

I have been using 0W40 synthetic Mobil Delvac oil in my MF245 diesel for a few years. I did this to aid in cold starting.

Slowly the tractor has been leaking more oil. There seem to be two leaks: the front main bearing (bottom pulley at front of engine) and also out the rear main bearing. As far as the rear leak - I actually see the oil dripping from where the cotter pin hangs out below the clutch housing, and the hydraulic oil level is not lowering like the engine oil is.

Questions:

1) Are these leaks because of the synthetic 0W40 oil?
2) If I switch back to regular oil, will the leaks reduce?

I am hoping to avoid replacing the bearings and seals, of course.

Thanks much,
Eric

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alberta dave

02-20-2021 03:55:18




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 Re: MF 245,0W40 syn oil, and leaks in reply to MF in Canada, 02-16-2021 09:38:27  
I ruined an Oliver Diesel engine using Esso polar plus 0w-40 several years ago. Started using oil heavy and was even worse to start than it was normally. Mechanic figured that the high detergent content dissolved much of the heavy sludges and gunk that an olde engine relies upon for lubrication. I think its possible that the incorrect oil could lead to some premature oil leakage but more likely you would see it in engine performance first. STP actually may help to reapply some of the components that may have been stripped away buy the synthetic oil. It was too late for me as I lost so much compression the engine stopped firing. Been yard art for 20 years now.

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derwen1959

02-18-2021 06:38:33




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 Re: MF 245,0W40 syn oil, and leaks in reply to MF in Canada, 02-16-2021 09:38:27  
I have dexta tractor that leaked from rear seal using 15w/40 , I topped it up one day with Fuchs HDX30 which
I use in old sawbench engine and no more leaks but I don't know how it would work in. cold climate



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ASEguy

02-18-2021 05:19:27




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 Re: MF 245,0W40 syn oil, and leaks in reply to MF in Canada, 02-16-2021 09:38:27  
Yes and Yes if you did not have significant leaks prior. I agree with using a thicker oil and I too use a heater. Mine is in the lower hose.



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brooktre

02-17-2021 21:09:21




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 Re: MF 245,0W40 syn oil, and leaks in reply to MF in Canada, 02-16-2021 09:38:27  
Let us know if you have any success. I would especially like to hear the results of the Seal-Lube.



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brooktre

02-16-2021 19:51:31




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 Re: MF 245,0W40 syn oil, and leaks in reply to MF in Canada, 02-16-2021 09:38:27  
I agree with David, that is a very thin oil and Im not sure that it is correct for that engine. I dont have an owners manual, but I found one reference that said this motor should use 10w30 or 15w40. Either of those grade oils in a synthetic formulation will give very good performance in cold weather.

Ive had engines that use / leak oil get better (use less oil) with thicker oils. While I dont have experience with products that improve seals, it might be worth a try for a few dollars.

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lugnuts2030

02-16-2021 11:06:31




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 Re: MF 245,0W40 syn oil, and leaks in reply to MF in Canada, 02-16-2021 09:38:27  
Add Seal-Lube by Nu-Tech to the oil, That should take care of your leaks. I added it to my 1085 25 years ago one time to stop front engine seal leak and to this day no leak. I use synthetic blend oil. additive will bring back new life to the seals.



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MF in Canada

02-17-2021 17:28:23




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 Re: MF 245,0W40 syn oil, and leaks in reply to lugnuts2030, 02-16-2021 11:06:31  
Thank you all,

I will certainly switch to 15W40. I use a block heater anyway.

And I will get some Seal-Lube, and add that if changing the oil viscosity doesn't stop the leak.

And if that fails, I will do the whole teardown and replace seals...

I really appreciate you all commenting on my question.

Thanks,
Eric



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lugnuts2030

02-16-2021 15:03:58




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 Re: MF 245,0W40 syn oil, and leaks in reply to lugnuts2030, 02-16-2021 11:06:31  
The truth is that I have had more than 1 tractor where Power steering wheel turned and oil would slip past the seals in warm weather. My friends JD loader tractor did this and got so bad he couldn't steer any more. I gave him a bottle of this seal softener and he added it to the resivore. He then started tractor worked it thru the system and warmed everything up and steering came back. That was 10 years ago. I don't sell the stuff. I just want to help people out. Many tear downs for seal replacement are unnessary. Just as simple as pouring correct thing in and letting it go to work. It won't fix a tore seal but 90% of the time seal is just aged and can be renewed.

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rustred

02-16-2021 10:41:15




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 Re: MF 245,0W40 syn oil, and leaks in reply to MF in Canada, 02-16-2021 09:38:27  
answers to #1 and #2 is no, and no. cold weather is usually when a leak will occur due to wear and seal stiffness. once it is leaking it will not stop other than warm weather might slow it down. its replace time. its a seal and oil viscosity makes no difference .



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David G

02-16-2021 10:58:01




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 Re: MF 245,0W40 syn oil, and leaks in reply to rustred, 02-16-2021 10:41:15  
I dispute that viscosity makes no difference, but OK on your opinion.



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rustred

02-16-2021 12:48:32




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 Re: MF 245,0W40 syn oil, and leaks in reply to David G, 02-16-2021 10:58:01  
well i am referring to new seals and shafts, and viscosity dont matter. he is talking both engine oils so i hardly think you will see any difference in leakage from one oil to the other. once you have a seal leak there is no fixing it and i dont care what additive is added. if anything the warm weather will slow down oil seal leaks.



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David G

02-16-2021 10:02:48




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 Re: MF 245,0W40 syn oil, and leaks in reply to MF in Canada, 02-16-2021 09:38:27  
That is an extremely thin oil.

If this is liquid cooled, put block heater on it and run 15-40



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