SAE 30

[1gr8bldr]

My 65 Fordson Super Dexta calls for SAE 30. Not as many oils were made then as now. My oil pressure starts out at 60 until the oil warms and then will work it's way down to 25. It seems like the newer oils such as 5w 30 would help the cold oil flow better, lubricating better at the beginning. I will soon change oil and I'm trying to decide which oil to go with. I would like to have a little more oil pressure. Not sure if a oil gear rebuild is needed or not, but a little more pressure might make me feel better about waiting until winter for the oil pump rebuild. So, I'm asking what would be a good option to the SAE 30

 

[LD1]

5w30 or 10w30,would both be fine. 25 psi is good oil pressure. Especially if that's at low rpm or idle

 

[kenmac]

Just keep a check on the oil.. Going from 30 wt to a multi weight. The engine may tend to use some oil. In fact, the owners manual for my Kawasaki powered zero turn states going from a 30 wt to a multi weight that, I may see some oil usage

 

[Gem99ultra]

My concern would not be about the 25 psi - that's plenty of pressure for a warm engine. But I do wonder if the 30W you are using is Non-detergent or not. Going to a multi-weight like 10w-30 etc. would be detergent oil. You surely would see some oil usage making that change.
If it were me, I'd stay with the straight 30W oil you've been using. My Ole' Blue Fordson-Dexta ran for 60 years and is still running just fine with straight 30W. But - as for your question as to 'a good option'... I agree with LD1's suggestion - IF you feel you need to make a change.

 

[Gary Fowler]

I use 10W-40 in anything I have due to high summer temps. I think the SAE30 that you list is a non-detergent oil for gasoline engines. I don't think you would hurt anything to increase to 40 weight multi-viscosity oil if you can find it in non-detergent formula (very unlikely).
You may have some excessive oil consumption if you go to a high detergent multi-viscosity oil. It will dissolve any varnish build up and sometimes make an old engine start burning oil AND seals start to leak due to the softening effect.

 

[Gary Fowler]

Gem99ultra beat me to it. Great minds think alike.

 

[Texasmark]

15w-40 is what I use in my older tractors. It's HD-HD oil and is for C and S applications. WW has a house brand.

Mark

 

[Copperhead]

Well, an option is always the Amsoil 30w. It is a straight 30w, but due to it's flow properties, it qualifies as a 10w30. No first hand experience with this stuff, but being a straight 30 weight, it should be an extremely stout oil from a oil shearing standpoint, which can plague some engine and multi grade combinations. It is a CI4+ rated oil. A little pricey though, at just under $28 a gallon at the preferred customer pricing. But we're not talking about using gallons and gallons of the stuff like one would need for a commercial semi truck in a year. If I was looking for a good 30w, I would give this one some consideration.

https://www.amsoil.com/shop/by-prod...30-sae-30-heavy-duty-motor-oil/?code=ACD1G-EA

 

[1gr8bldr]

Thanks for the opinions. I went with Rotela 15w40

 

[two4spooky]

Shell Rotella diesel oil comes in a straight 30wt. My local Walmarts carry it. I have seen it at AAP or AZ also.