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Supertech oil

B

Bkpigs

Member
I usually use Valvoline for my tractors but the letter series need a bit thicker oil that Valvoline carries. My 300 and dad"s 300U I use 10W-30 all year long and have plenty of oil pressure. But the A and B when warm will have little oil pressure at idle so I want to use 15W-40. At Wally World could not find Valvoline at that grade but did find Supertech. I was trying to compare the ratings but it may as well have been in Chinese. I figure it has to be as good or better than what the tractors have ran on when they were new so I went for it. So my questions are:

1. Can someone make sense of the specs. ratings for me (CJ-4 and all of those)?

2. Is Supertech a decent grade oil?

3. I would like to have all tractors on the same oil to simplify things (although with only four it is not the hardest). Would it be a bad idea to but 15W-40 in all the tractors even the two 300s that have good oil pressure with 10W-30? The voice in the back of my head says to just use the two different types of oil and play it safe.

Thanks
 
I don't think it makes any difference. Oil pressure is way overplayed. All oil pressure is is what's left over after the oil is forced through the system. As long as you have "flow" the engine is getting lubed. Unless you work your tractors really hard in hot weather I'd stick with the 10-30
 
Look at the back of the jug along with a jug of the brand name stuff. They meet the same standards and conform to the same specifications.

Those standards are far and away higher than any oil standard that existed in the 1940's, and your A and B are still running.

Anything you put into them now would be doing them a favor, even the cheap stuff.

That said, thicker oil won't make much difference in oil pressure, especially only 5 points. Straight 40 oil might help a little.
 
Same here. That engine will probably run another 50 years at 5 lbs pressure.
Valvoline 10w-30 will work fine.
For extra protection mix 1/2 regular Valvoline 10w-30 with Valvoline 10w-30 Racing Oil.
You will get more zinc and phosphours in the system.
 
(quoted from post at 06:27:31 12/13/10) I usually use Valvoline for my tractors but the letter series need a bit thicker oil that Valvoline carries. My 300 and dad"s 300U I use 10W-30 all year long and have plenty of oil pressure. But the A and B when warm will have little oil pressure at idle so I want to use 15W-40. At Wally World could not find Valvoline at that grade but did find Supertech. I was trying to compare the ratings but it may as well have been in Chinese. I figure it has to be as good or better than what the tractors have ran on when they were new so I went for it. So my questions are:

1. Can someone make sense of the specs. ratings for me (CJ-4 and all of those)?

2. Is Supertech a decent grade oil?

3. I would like to have all tractors on the same oil to simplify things (although with only four it is not the hardest). Would it be a bad idea to but 15W-40 in all the tractors even the two 300s that have good oil pressure with 10W-30? The voice in the back of my head says to just use the two different types of oil and play it safe.

Thanks
Click to expand...

Your A and B have some issues with the oil pumps, and until you address that issue, it won't matter what type or brand of oil you use. Search the forum archives for "Farmall A oil pump".
 
I have been running SuperTech oil in about everything I own for several years now, with no ill effects so far. This includes two late model pickups, and a 65 Horse Diesel tractor (I use the 15W40 Supertech). One of my pickups was purchased new in 05 and now has 111,000 miles on it using the Wal Mart oil, and no problem so far. I am very suspiciuous though as I know Wal Mart is famous for moving to sub-par quality on many items. I used to purchase their oil filters, but noticed a substantial difference in the weight of those filters a few years ago. I suspect the filter now is little more than a can with very little media in it. I now try to buy Wix filters or Napa which is made by Wix.
 
Agreed. Supertech is API certified just like any other "name brand" oil like Quakerstate or Penzoil. While I'll buy Castrol GTX for my car (sees a lot more use) Supertech goes in some of my lighter use engines and I use their straight 30W for small engines. It is so much better than the original oils that went in these tractor back in the 1940s and 1950s.

If you can't develope oil pressure with 30 weight oil the problem isn't that you need thicker oil.
 
As I recall from looking at labels, not all the oils on the shelf at walmart have the latest diesel rating along with the latest gas rating per API.

That said and after looking at the api ratings, diesel rated oil is good for EGR systems. But cars have EGR systems as well. Sounds to me like you need diesel rated oil for a car.
 
And to add my thoughts to Wardener's link:
my observations have found most Non-Detergent oils to be SA and/or SB-rated oils. SA is prior to 1930 and SB is prior to 51.
However, I don't believe they used those designations until the late sixties. I have a ford and an ih operator manuals from about 1968 that mention grades of ML, MM, MS, DG, DM, DS; and then specify MS for gas and DS for diesel; IH also says to use "series 3" for diesel. The IH book converts those to SD/CC and CD .
IH says LP gas should be low ash meeeting MS supplement 1(no new code)...and this type of oil is usually labled for LP gas. But then to confuse it all, IH also said for the gasoline engine "DO NOT use 10w30." go figure...likely for noise anyway although maybe they hoped thicker oil wouldn't lead to torched valves.
So there is a lot of details to consider, even though it's actually relatively simple.

at any rate, I wish the myths about oil that are truly BS would have never been circulated in the first place.

karl f
 
most 4-6 cyl tractors were rated for 20w oil, 10w in winter. Modern 10-30 is extremely good, the new code is SN. 15-40 is good for all deisels, and shell and chevron are fair priced.
 
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