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.