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Ford 9N, 2N & 8N Discussion Forum
:

2N - ok to use 10W40 oil ?

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Total

06-19-2020 18:45:20




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Hello All : With a 2N - is it ok to use 10W40 oil ? or should it be 15W40 ? Thanks




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gears

06-21-2020 14:34:40




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 Re: 2N - ok to use 10W40 oil ? in reply to Total, 06-19-2020 18:45:20  
Thanks TOH, I always appreciate you interpreting viscosities, you are like my very own Cliff notes.



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TheOldHokie

06-21-2020 12:52:54




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 Re: 2N - ok to use 10W40 oil ? in reply to Total, 06-19-2020 18:45:20  
Quoting Removed, click Modern View to see

My comments were not directed at your situation. They were intended to clear up some of the misconceptions about the relative properties of the two grades.

TOH



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Total

06-21-2020 10:33:08




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 Re: 2N - ok to use 10W40 oil ? in reply to Total, 06-19-2020 18:45:20  
I only use the tractor when it is above freezing and usually 70 F and above . In the winter it is in the shed on a battery maintainer waiting for spring .



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TheOldHokie

06-21-2020 06:23:45




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 Re: 2N - ok to use 10W40 oil ? in reply to Total, 06-19-2020 18:45:20  
Quoting Removed, click Modern View to see

Let me expand on that a bit. When hot the viscosity of these two grades is almost identical. Some real measured product viscosity data to illustrate that point. I have picked the widely touted Rotella as my baseline:

Shell Rotella T 15W40 - 15 cSt @ 100C

Shell High Mileage 10W40 - 15.5 cSt @ 100C

Mobil 1 High Mileage 10W40 - 16.0 @ 100C

As you can see, at operating temperature in both of those two 10W40 oils are actually ever so slightly thicker than the Rotella 15W40. The difference is so small as to be insignificant and that is my point. You can find other brands/formulations of 10W40 oil that are slightly lower than the Rotella product but again the difference is not significant. ALL brands and formulations of ALL xxW40 grade oils fall in the same SAE defined viscosity range for grade 40. (12.5 to 16.2).

Where the viscosity difference between 10W40 and 15W40 gets to be VERY significant is at 5F (-25C). At that temperature the 10W40 is still pumpable and the 15W40 is not.

TOH

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Mad Farmer

06-21-2020 04:46:17




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 Re: 2N - ok to use 10W40 oil ? in reply to Total, 06-19-2020 18:45:20  
My 9N has always had low oil pressure once it gets warm/hot (10 lbs). But it's been the same since I purchased the tractor in 1985. No knocks or bearing noises. I think the gauge is inaccurate.
I've ran 20-50W in the summer when brush hogging but now I'm using 15-40 W Rotella year round. I buy 5-gal pails when it's on sale.

I don't see a problem with 10-40W if oil pressure is good, especially if you use the tractor in cold winters.

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Total

06-20-2020 20:56:51




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 Re: 2N - ok to use 10W40 oil ? in reply to Total, 06-19-2020 18:45:20  
picked up 10 liters of 15W40 . Thanks everyone .



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Total

06-19-2020 20:27:40




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 Re: 2N - ok to use 10W40 oil ? in reply to Total, 06-19-2020 18:45:20  
thanks guys , 15W40 is what I'm going to use . Appreciated .



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John Deere D

06-19-2020 20:05:36




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 Re: 2N - ok to use 10W40 oil ? in reply to Total, 06-19-2020 18:45:20  
Here's my 2-N......
15-40....Engine Oil.....
Engine coolant runs at 180 deg F...Thermostat in top Rad hose...
First gear full throttle......
John Deere Grass Groomer...
Todays ambient 80 deg F
Tractor stored in shed for 30 + years
Tractor has ran prefect for the past three summers.....

North Western Alberta on the AB/BC Border....120 th parallel Longitude...

Bob....


rst gear full throttle......

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Leroy

06-20-2020 20:35:27




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 Re: 2N - ok to use 10W40 oil ? in reply to John Deere D, 06-19-2020 20:05:36  
Used 10-30 till could get 10-40 for years. Never bought 15-40 for anything.



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TheOldHokie

06-19-2020 19:08:03




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 Re: 2N - ok to use 10W40 oil ? in reply to Total, 06-19-2020 18:45:20  
Quoting Removed, click Modern View to see It doesn't matter. It can be any thing from 0W40 to 15W40. They are all grade 40 oils and heavier than the OEM specificaton which was grade 20 for general summer use.

TOH



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Colin King

06-19-2020 19:00:02




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 Re: 2N - ok to use 10W40 oil ? in reply to Total, 06-19-2020 18:45:20  
It really just depends on your oil pressure. If you are satisfied with your oil pressure with your 10W40, then use it.

I use 15W40 Diesel rated oil in my 8N from Farm-Oyl in part because it's the same oil that goes in my bigger tractor, my diesel truck, and an older Volvo I have. Convenience plus performance.

Colin



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