'89 Ford IDI 7.3

[roadrunner1]

I just recieved my latest UOA, thought I would share '89 Ford Super Duty 7.3 37,686 mi. total, I bought this truck new 2,266 mi. on sample ideling hrs. est. 300 John Deere plus 50 10w-30(CI-4) 04/12/11 sample date iron............................61 chromium.........................1 nickel...........................1 aluminum........................<1 lead.............................4 copper...........................1 tin.............................<1 silver.........................<.1 titanium........................<1 silicon..........................5 boron..........................166 sodium...........................4 potassium......................<10 molybdenum.....................121 phosphorus....................1447 zinc..........................1652 calcium.......................3973 barium.........................<10 magnesium.......................93 antimony.......................<30 vanadium........................<1 fuel% vol.......................<1 t/s% vol.........................1 water% vol.....................<.1 vis cs 100c...................12.2 Other than the iron everything looks good. This truck idles constantly to run the hydralic system, I don't have a hour meter on it. I change the oil annually.

 

[xxch4osxx]

Nice strong add pack in that oil.

 

[Jim Allen]

Good report. You didn't change it, did you? The only thing that jumps out at me is that my '86 6.9L averages iron in the 40ppm range with 100K more miles on it. Don't think yours is really that bad but I just wonder.

 

[roadrunner1]

Yes I did change it, its year was up. Our busy season begins May 1 and its usually away from home until Dec., so it gets changed every year in apr. Just guessing it probably has 300 ideling hrs., two years would be pushing it too far.

 

[Jim Allen]

I run two and three year intervals on trucks and tractors all the time with good UOAs. Your soot and fuel are nice & low too. No TBN, Oxidation or Nitration numbers to look at but everything else points to oil that's still healthy. Oil doesn't run on a time clock. Your choice, of course.

 

[CDX825]

I would recommend wiring the high idle solenoid up to a manual switch if your not raising the idle some other way. The IDIs were known to get flat spots on the roller lifters from to much idling.