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I changed oil to Delvac 14-40. Ran it 7200 miles. The coppper dropped way down to 4. Vis is hier at 15.2. Oxidation is lower as well 14. TBN is lower 4.75. Evidently the hi copper with Amsoil was leaching. Amsoil............................................Delvac...

I put the bypass filter on at 98K.

Yes a typo. TBN is 6.38, Ox is 54. I'm burning more oil than that. I haven't kept records, est about a qt per 2000Mi. I did add bypass filter, aluminum filter block and brass fittings. The truck is chipped and opened up intake. I hear turbo surge once in a while and suspect thats whare the Cu...

Sorry about that. Its a 2000 Ford Excursion 7.3. Started using Amsoil AME 15-40 at 80K, Oil Change at 98k and 112K. The last sample sump was 4 Qts low. Mi..........108,000........112,000...OC....126,651........134,580 oil..........10,000.........14,000-----------14,651........22,556...

Here's the history. AME 15-40. Last sample the sump was 4 qts low. mi 108K 114K - 126.6K 134.6K oil 10K 14K - 14.6K 22.6K Iron 27 37 - 37 53 Ni 1 Crom 1 1 - 1 2 Al 4 5 - 12 13 Cu 20 40 - 74 184 Lead 10 12 - 7 8 Tin 1 2 - 0 1 Vis 12.9 12.6 - 12.6 12.4 TBN 9.15 7.49 - 8.33 6.36 ox 37...

Notice smoke only on cold start ups, last for maybe 5 seconds. Sometimes I use stanadyne in the fuel

I made up my own by-pass with brass fittings and aluminum filter block. Could the copper be coming from the brass fittings? I could change oil and remove it to see if there is a difference. I have a blast of blue smoke when I start up. Somebody said it could be oil leaking in the injectors?

The previous Oci and OUA which was at 14K mi also, showed 40ppm of copper. So it looks like the trend is up. But lead was at 12 before and 7 now. What would the issue be with the oil cooler? I do have oil in the IC. One of my chores is to take off and clean it and install one of those CCV...

The truck is chipped and once in a while I hear the turbo surging. Maybe that's whats happening.

Started using Amsoil at 80K miles. Is there copper in the turbo? Sometimes have used stanadyne in the fuel. Thanks for the imput guys.

3 qts of make up oil. Oil level is down some now. Last year had UOA done at about the same miles 14,000 Iron 37 Alum 5 Copper 40 lead 12 tin 2 More lead, copper and aluminum. But tin is down.

2000 ford 7.3 , 126K mi- 14,600 mi on oil, Amsoil ame 15-40. bypass filter. Iron 37 Chrome 1 Nickel 0 Aluminum 12 Copper 74 Lead 7 Siicone 8 Sodiom 5 Potassiom 2 Molybdenum 2 Boron 1 magnesium 8 Calcium 3411 Phosphorous 1112 Zinc 1298 Fuel %0.3 Soot Water Vis 100c 12.5 TBN 8.33 OXIDA...

It is a little small to read: Hear they are, 1 st sanple 10k mi, 2nd 14K mi Iron : 27,37 Chrome: 1,1 Nickel: 0,0 Alum: 4,5 Copper: 20,40 Lead: 10,12 Tin: 1,2 Silicon: 8,11 Sodiom: 4,4 Potassium: 1,2 Molydenum: 2,3 Boron: 3,4 Magnes: 11,11 Calcium: 3601,3725 Phosphorus: 1180,1225 zinc: 1311,1302...

OK here it is with 14K mi. I changed oil and filters when i took this sample. Looks to me copper is getting worse, And Vis is stable now.

It was a new engine, 1st season. Talked to the guy that took a pair out and replace with 6-71. He didn't give me the model #, but said they discontinued the model he had, becouse of problems. The JD's he had we're a nightmere and didn't want to talk about them. He origany had 6-71 and was...

Onion, The guy that was leaking oil, it was their big engine, I'm not familier with JD's. 12.5 sounds familier.

Originally Posted By: wjdell do a compression test and if its good maybe replace the valve seals and keep on going. Thanks a compression test is not a bad idea. At 31k hrs replaced heads, factory remans. At that time 70% of hone marks we're showing, and no sign of a ridge at the top of the...

Originally Posted By: eljefino ^ how's the pH relate to all the aluminum stuff in a car cooling system? That nalcool sheet specifies cast iron... I think Nalcool 2000 is for non alum, and Nalcool 3000 is for protecting aluminum.?

Originally Posted By: oilboy123 Probably my Brother won't go with one. What kind of problems? They are a tried and true tractor engine............ That's why these guys bought them. heads we're leaking fuel oil into the coolant via whare fuel goes into the injector. computer or a sencer...

Originally Posted By: Chris142 I'm curious. Whats the Hp on this one? If it makes you feel any better the NT280B Cummins in my Peterbilt is still going after 47 years. NTA-855 M3, 350hp @1800 rpm Becouse of the time on the engine, I have been considering a rebuild, @ 30K started to burn a...