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This is 4,000 miles on my 7.3. Is fuel dilution a problem here? Viscosity is low but this thing shears oil. Boron and potassium is left over from archoil

I checked the oil on my '01 7.3 and it was a tad bit overfull. I haven't checked it for awhile but don't remember it being that full. I heard Blackstone doesn't give the most accurate fuel readings. Who shall I go with to get the oil sampled? Thanks

Looking at the old CI oil I use, the Zinc and Phosphorus levels were around 1600/1400. And calcium was around 3500. Now the CK oil is 1000/900 and calcium around 2000. Delo and Delvac even lower. So my question is, how is this better? I understand new equipment might have different engine...

3,000 miles of towing heavy and all of the above on rotella t6 ck4. Switched to Schaeffer's 9000 5w40 cj4. The ck4 actually did well, probably wouldn't need to switch to Schaeffer's, but going to run it to 5,000 miles now. Oil was in the sump for 2 years. Call me crazy, but I do think the engine...

I received a company vehicle and put very few miles on my Cobalt 2.2 these days. Maybe 2,000 miles a year. My question is how long is my oil good for inside the crankcase? I only run Pennzoil Platinum or Amsoil SS. Can I leave this oil in for 3 years? I will not use dino oil due to the chatter...

I had contacted Amsoil and asked them for some more info on their new diesel oils. This is what they gave me. Just wanted to pass it along for everyone. Much better than I thought. DEO: Signature Series 5W-40 Zinc: 1314ppm Phos: 1206ppm TBN: 10.1 ADO: Heavy Duty 5W-40 Zinc: 1108ppm Phos...

I am concerned about the new CK-4 oil in my ford trucks. I have a 2001 7.3 and 2 IDIs. I changed the oil recently to Rotella T6 and I just noticed it had the CK-4 rating on it. Is it okay to use or should I dump it and go back to my Cen-pe-co?