Well this is a first for me.

[ovrszd]

I am of the opinion this is the answer.

Along with the tighter clearance tolerances.

As for exhaust. Our new JD Grader has 500hrs on the clock. If you run your hand inside the exhaust stack you'll get a slight bit of greyish dust on your fingertips. Looks like a new pipe.

 

[ovrszd]

I can relate to that.

Got the engine oil changed on my tractor at 50 hours, it come out almost as clear as the one that comes straight of the bottle.

Now, with 180 hours on the new oil, it's just getting a darker color. No emissions stuff on it either.

Yep, that's my experiences with new diesel engines.

P.S. Really like your new Avatar!!!

 

[Big Barn]

Yep, that's my experiences with new diesel engines.

P.S. Really like your new Avatar!!!

What do u see? A shot of my Pete?

 

[4570Man]

New diesel engines run soooooo much cleaner than older models. Once you get into the Tier IV equipment they just don't dirty the oil like before.

I change oil in our Grader at 250hrs. It's not black when I drain it.

I change oil in my 1984 Ford tractor at 100hrs. It's black as coal. Actually it blackens within 5hrs of use.

Improvements in materials have allowed much smaller clearances which have minimized oil contamination in modern engines.

As to oil weights, my wife's 5.7L Hemi runs 5W-20. Talk about water.....

Was highly scolded by my mechanic Son when I told him I switched it to 15W-40!!!!! Next change I went back to 5W-20 as recommended.

One of my buddies used to run 15-40 in everything because they had pallets if it. His V10 Ford didn’t like the idea very much and the mile long oil tensioned timing chain jumped and things went farther down hill from there.

 

[ovrszd]

What do u see? A shot of my Pete?

Actually I was talking to ptsg. I'm assuming a coastal pic of his homeland??

 

[ovrszd]

One of my buddies used to run 15-40 in everything because they had pallets if it. His V10 Ford didn’t like the idea very much and the mile long oil tensioned timing chain jumped and things went farther down hill from there.

That was a similar lecture that I got from my Son.

Newer engines have such tight tolerance that the oil viscosity recommendation must be followed.

 

[ptsg]

Yep, that's my experiences with new diesel engines.

P.S. Really like your new Avatar!!!

Actually I was talking to ptsg. I'm assuming a coastal pic of his homeland??

I missed your post before.

Yes indeed, I live by the coast and I do have the pleasure of getting these views every time I cruise by the beaches.

 

[Oldpath05]

I thought diesel engines always had tight tolerances because of compression driven.......

 

[ovrszd]

I missed your post before.

Yes indeed, I live by the coast and I do have the pleasure of getting these views every time I cruise by the beaches.

Pedro, thanks for the Avatar pic. It's awesome!!!

 

[ovrszd]

I thought diesel engines always had tight tolerances because of compression driven.......

Actually the compression ratio required exceeded the tolerance capabilities for years. So they constantly contaminated the oil thru piston ring bypass.

Today's engines are much more efficient with minimal bypass. Add ULSD fuel and they contaminate the engine oil less.

 

[Oldpath05]

When we say todays engines, is that to imply only engines in the last two years.... My tractor is (07) and they told me because of todays ULSD fuel I had to add in several ounces of Power Service additive per fil-up, I now use OR diesel but still add in the additive.................

 

[ovrszd]

When we say todays engines, is that to imply only engines in the last two years.... My tractor is (07) and they told me because of todays ULSD fuel I had to add in several ounces of Power Service additive per fil-up, I now use OR diesel but still add in the additive.................

In my experiences I would say diesel engines falling under the EPA guidance based on HP, 25 and above. For those, this has been going on for a few years, 5 or so.

I burn ULSD in every diesel engine I own (6) without any additive other than Gel prevention in Winter.

If by saying "OR" fuel you mean dyed red fuel, it's the same fuel as "clear", simply has a red dye to designate that it is being used "offroad" and thus no road tax. No specific additive required.

 

[Big Barn]

The last few years I don’t even have to think of Power Service anymore.



Whenever I get fuel delivered the driver dumps a jug in for me.




That way it gets done with every fill and I eliminates my OMS (old man syndrome) from trying to recall if I did it or not.

 

[ovrszd]

The last few years I don’t even have to think of Power Service anymore.

View attachment 668101

Whenever I get fuel delivered the driver dumps a jug in for me.

View attachment 668102


That way it gets done with every fill and I eliminates my OMS (old man syndrome) from trying to recall if I did it or not.

You have that too?????

 

[Big Barn]

You have that too?????

For a while now. .

 

[Jstpssng]

Even my old 1984 'Bota smoked less when they switched to low sulfur fuel.

 

[kenmac]

Well, In my 2018 kubota Zturn. the engine oil is always black

 

[ovrszd]

Well, In my 2018 kubota Zturn. the engine oil is always black

Assuming it's low enough HP to avoid Tier IV requirement?

 

[deezler]

Oh c'mon, tell us what oil you put in 'er! Don't be shy, lol.

But another thought: The instant "blackness" of new oil in diesel engines can also be affected by how thoroughly you drain the old stuff out. IE, one half cup of residual sooty black oil left in the filter housing, pan, or block can make a fresh gallon of new oil look dirty right away once mixed back in. If your machine has a well designed oil system and you drained it out on a 120 degree day (YUCK, btw), I bet it drained very well and you got all the old thin junk out.

 

[oosik]

I change my oil annually. My first tractor - Ford 1700 - would have black oil after an hour running on a fresh oil change. The oil on my M6040 looks just like new oil - after a year of use. I use Rotella 15W-40.

deezer - you may have a very valid point.