D6 9U oil cooler

Not worth it. Modern oils and all....

If you ever need to replace radiator core, order the full width one and can the old cooler, but till then loop the oil cooler lines back to filter base or if you want to do it neater, you can plug the holes and remove the cooler bypass valve to let the oil flow easier through the filter base.

I was doing some searching, and I thought that the 6cylinder engines maybe needed the cooler, or did I read that wrong? After it runs an hour or so, the oil does get pretty warm.

Rodney

That's my thinking also. OK to remove on the D2's and D4's but the D6 should retain it's cooler, at least in my opinion.

If it was mine.........I would loop the two cooler lines together and put in a T so that you could screw in a temperature gauge to monitor the oil temperature during operation. A couple thread to sweat adapters, a sweat el or two, a threaded Tee and a gauge with bushing/adapter, a little silver solder and flux and you have a real live experiment which could benefit others as well.

I cannot imagine how a 1940's technology 75 hp engine of 525 cubic inches displacement which has an oil capacity of 22 quarts would fall apart if it didn't have an oil cooler. Seems like most references I could find online recommend oil temperature stay less than 212*F/100*C under normal loads and for normal change intervals. Of course some engines use oil as a primary cooling fluid (Deutz for example) as much as a lubricant, so maybe a worst case situation as regards to oil temperatures.

Link to AGTalk discussion of Deutz engines and others with references to max permissible oil temperature.
http://talk.newagtalk.com/forums/thread-view.asp?tid=316249&DisplayType=nested&setCookie=1

I was going to post the same thing about T/C'ing the oil line.
BUT!
Need a good solid steady load at Full RATED Power for at least 2 hours to get good data!
Preferrably at a high ambient temperature also!
Most Commercail oils will handle 220 with minmal evidence of shortened life.
But seen as the general consensus is to run only CAT Oil.
Then I figured I would wait and see!
:confused2:

OK, so I should loop the oil lines, and tee them to a temp gauge..... I will use hyd hose for the loop..... How do I attach it - just a couple of worm style hose clamps, or do I need a crimp fitting? Anybody know what the thread might be on the oil filter base? I have a crimper here, I would just have to get the fittings/adapters. The loop can be pretty tight, right, no advantage to having the hose real long, right?

Rodney