Re: How to check oil on a Farmall H?.

Posted by williamf on March 04, 2006 at 15:05:51 from (69.19.14.20):

In Reply to: Re: How to check oil on a Farmall H?. posted by jfd on March 04, 2006 at 12:35:32:

You can get a strenuous discussion going on what kind of oil. The manual says 30wt non-detergent. The only semi-not crazy reasoning I have heard for still using non-detergent is that if that's all that had ever been used in it there might be so much crud built up that if you put in detergent oil pieces could break loose and clog up the oil passages.
I'm going to go out on a limb and say use detergent. It's unlikely the P.O. went to the trouble to find 30wt non-detergent other than the stuff at Wally World that warns you on the label not to use it in a gasoline engine, and you're better off chancing the change than contiueing with that stuff.
As to the straight 30wt, you can find very sensible people that will tell you that the only reason IH didn't recommend multi-weight is that fifty years ago what multi-weight there was wasn't good enough. And other very sensible people that will tell you that the engine was designed to run 30wt so you should.
Some will say they've been running 30wt year-round for sixty years with no ill-effect, others that they've been running Rotella since it came on the market and haven't had to rebuild the motor yet.
Me, I recently changed from 30wt to 15-40 Rotella just so I only have to keep one kind on hand and that's what my diesel likes.
If anybody seriously thinks that's going to damage a recently overhauled, semi-retired H: flame on.
I'm past it.
Good luck,
Wm

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