Castrol Tection 15W-40 oil in a JD 2 cylinder Dies

Will it work OK or is it better used in Deisel trucks or newer diesel tractors?

Thanks!

I suspect that many - if not most people would not know the difference if a certain oil reduced
the life of their engine by - let's say 10%, 20%, etc. I'm speaking of a collector's tractor - not
one being used daily for hard work. Years ago - when I worked for a Deere dealer - we got
hammered if an engine lasted 8000 hours instead of 10,000 - but that's a different situation. I contacted a friend of mine who is a retired Deere engineer. Asked him a few questions to
refresh my own memory. He retired from Deere in 1994 and worked in engine-design an
testing. He states that Deere never dropped their recommendation - to avoid - when possible -
polymer-based multi-viscosity oils in any diesel that uses conventional square-sided piston-rings.
All multi-oils use the said polymers except for the synthetics. The issue is one of polymers burning off and leaving heavy deposits that cause pre-mature
top-ring wear. This problem was eliminated with the use of triangle-shaped Keystone rings in
the top piston-grooves. This matches information I have from both Deere and Detroit Diesel - my newest bulletin dated
1991. I also know that some rebuild companies for Detroit Diesel 2-strokes will still void the
warranty if a multi-visc. oil is used unless it's synthetic.

You said "I will assume that you do NOT automatically assume that someone holding the status of shop foreman is an authority on the subject. If you do - we have a problem since I was a Deere Ag. and Ind. shop-foreman for 12 years. So, how does one choose which shop foreman to believe?"
By your own statement,should I disbelieve anything you post just because you were a JD shop forman for 12 Years, or should I assume that your position in charge of a dealership repair shop should make you somewhat more enlightned than the average man on the street ?

And yes, I do check the company web site of any oil I choose to use to see what they recommend for the application. I mean no disrespect for you and your retired JD engineer friend, but you must realize how much motor oil has changed in the last 2-3 years because of the tight diesel emissions rules that demand the cleaner running on road, off road and ag diesels.
While the new oils are more expensive, they can handle soot, heat and loads that were impossible only a few years ago. The great part is that when these oils are used in an older, pre emissions diesel, you see less wear in spite of longer run time between changes.

As to my Detroit 2 cycle engines and multiweight oils, mine are both 400+ HP 8V92's in semi tractors pulling 80,000 + pounds,but they are farm trucks that that are fired up long enough to get the air up and get the coolant up to the 140 range before pulling a full load that never exceeds 6 miles from field to farm. Under these conditions,milti viscosity oil causes less wear than single grade 40+ viscosity oil because these trucks hardly get the oil warm before the job is over. If I was to load up and run 500 miles before shutting down, I would them use the 40 or heavier single weigh oil as it might or might not be the lesser evil. The same advice would go to the owner of a classic tractor.
Do you remember when it was bragging grounds when a 50's car ran 100,000 miles before needing an overhaul ? Now we are put out if our car engines do not run at least 200,000 miles. Granted,the newer engines are better built, but the modern multi viscosity oils,now usually 5w-20 or 5w-30 have a great deal to do with that also. You see the same thing with a rebuilt classic engine run on modern oils. Things are changing very rapidly and most of it is for the good, Do not dismiss modern oil just because it is newer than the machine you poar it into. :-)

If you do - we have a problem since I was a Deere Ag. and Ind. shop-foreman for 12 years. So, how does one choose which shop foreman to believe? I say don't believe any of them and do your own research.

I don't assume that someone who is an engineer is automatically an authority either. I learned that a long time ago - especially with some Deere engineers I worked with. I'm picking on Deere - only because I've never worked along side any other sort of engineer. But, my father-in-law is a retired Ford engineer and he's filled me in a little about how things work in his type of world.

I use spec. charts from oil companies for my own peace-of-mind. And - judging from the oils and their specs - that I use - I disagree with much of what you stated. But - you are free to use what you wish - and believe what you want - just as I am.

Most synthetic oils have much more stabil bases in regard to viscosity and do not use the same polymers and petro-based oils.

As I said previously - when I'm in doubt - I don't like taking chances and prefer to use something proven by time - not by computerized projections (that are sometimes used).

In regard to the new oils being fine with Detroit 2-strokes? I still use the old standy - Rotella T 15W-40 in much of my stuff - but not my Detroits. I got two machines with 3-53s and one with a 3-71. The current data sheet for Rotella T 15W-40 reads (and note the Detroit comments) : Shell Rotella T 15W-40 - 100 degrees C - 15.7 viscosity, 40 degrees C =- 118 vis. Note: Detroit Diesel Series 53, 71, and 92 engines operating in ambient temperatures below
0°F - otherwise use straight 40W.

If using the CAR multi-grade hasn't hurt it, WHY would quality diesel oil be bad for it????