My first oil analysis at 40,000 miles running synthetic.

Is this 40k on a new engine, rebuild?

 

First time analysis?

 

Gotta question why the 100k, or yearly interval? Especially on a 650k engine that's been running conventional. How much will you spend on analysis every year?

Anyway, first analysis, so you really have nothing to compare to. As they said, your aluminum #'s are off, but as a first analysis you don't really have a baseline yet besides their averages.

 

Schneiders only trying to make trucks last till trade in too. I could see 40k, but not 100k. It's not 700$ for oil. Maybe 300$?

Guess I just spend too much on maintenance. But I ain't thinking twice over something that might add 1 or 2K over a year. I'm the guy on my 5th oil change since overhauling, and 7 sets of filters. On 38k miles

Good luck either way

 

You basically want to do what the ‘Sentinal System’ tried to achieve. Extended oil change interval, achieved by every ‘X’ number of hours a measured amount of oil was automatically withdrawn out of the crankcase, then replaced with fresh oil from an onboard resevour. The ‘used’ oil was injected into the fuel tank. Filter change(if I recall correctly) schedule was every 100,000 miles. Worked for an LTL company that tried this system years ago, nearly every engine(N14) at the time was totally shot at 650,000-700,000 miles. Needless to say, after they discovered that was the death bell, they removed those systems from the trucks.

 

USA Truck tried 100k mile changes also, but not with modern engines. Utter failure, but those were 60 Series Detroits running Schaeffer synthetics. Made the dealership i was working at plenty busy