Engine oil

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KC2LLW
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Engine oil

Postby KC2LLW » Thu Oct 05, 2017 7:06 am

Hello,
I see that the Cub engine oil calls for SAE-30 thru SAE-10 depending on the outside Temperature. When I look up these oil weights on Quaker States website they say not for use in gasoline engines? Would I be better off to use a 10W20 oil or a 5W20 Mobil 1 synthetic? Looking to do an oil change next weekend and want to use the best oil possible.
Thanks,
Steve

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radioguy41
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Re: Engine oil

Postby radioguy41 » Thu Oct 05, 2017 7:36 am

I use low-ash (recommended) 30wt from the local IH Case dealer.
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Stevetractor
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Re: Engine oil

Postby Stevetractor » Thu Oct 05, 2017 8:39 am

When I had did my first engine rebuilt on one of my Cubs this was a topic that we discussed. He suggested 15w-40 shell rottella t. His reasoning was that it’s a very good quality oil low in ash and protects like a 40w when hot but pumps and lubricates much better when cold than a straight 30w. Certainly I wouldn’t use a synthetic low viscosity oil as a Cub would burn that quite readily especially if it was a bit worn. Also synthetic oil is much more expensive, and a Cub engine isn’t subjected to the same strains as new car engines. JMHO :tractor:

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Urbish
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Re: Engine oil

Postby Urbish » Thu Oct 05, 2017 8:52 am

If you search this forum, you'll find hundreds of posts relating to engine oil. Everybody has different opinions. I run straight 30W in the summer and 10W30 in the winter, both conventional oil.

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Shane Nelson
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Re: Engine oil

Postby Shane Nelson » Thu Oct 05, 2017 8:54 am

I run Rotella 15W40 in everything, car, trucks, tractors, mowers, trac-vac. It's much simpler to use one oil than to keep up with what's in what. I've had no problems with anything using Rotella.
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Stevetractor
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Re: Engine oil

Postby Stevetractor » Thu Oct 05, 2017 10:37 am

I will add.... more importantly, change on a regular basis, drain filter housing, and use new good quality filter.

KC2LLW
10+ Years
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Joined: Mon Dec 04, 2006 8:38 pm
Zip Code: 00000
Tractors Owned: 1948 FCUB
2005 NH TC45DA

Re: Engine oil

Postby KC2LLW » Thu Oct 05, 2017 11:08 am

Thanks, for all the reply's. I do use Rotella 15W40 in my 54 Willys CJ3B and in my 2002 7.3 PSD I also run it in my 2005 NH TC45DA tractor so I guess I will also run it in my 48 Cub.
Thank you,
Steve

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Re: Engine oil

Postby ntrenn » Thu Oct 05, 2017 11:47 am

Your cub will start at 15 below with 15w40.


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