New Truck - X15 Advice

[Rawze]

(05-30-2019 )03maxpower Wrote:  I went 30000 on my first oil change and Schaeffer’s said it’s good I didn’t go any longer with the delo oil. I changed at 30000 with Schaeffer’s oil and oil was good but additives were depleted. About to change at 30000 again and see what I get. Rawze is right about 50000 for the mega carriers Cummins themselves told me that. Not good to buy a fleet truck.

My own engine does not like going 30,000+ on oil changes, I get 9+ mpg, had a bypass filtration system on, and my oil does not even turn dark .... -- Your going to be replacing overhead cams in that thing at 400k miles with that change interval.

I don't care who someone is,... There is not a person on the planet that can convince me that changing oil at longer intervals is even remotely OK, even on a de-mandated engine, nonetheless on a factory-programmed soot-sucking black-oil-all-the-time monster.

.. WHY???

-- Because there is no other explanation but separation (the leading cause of having to change the oil out). Seperation cannot be measured in a LAB,.. but you can sure hear it in the sound of the engine as the oil starts to seperate, especially if you know what your engine should sound like and have to listen to it for 11+ hours a day.

If I change my oil out at 30,000 miles,.. IMMEDIATELY, I can hear and feel that it is running smoother right after a fresh oil change. - It is not a subtle thing,.. it is significant enough that I can even hear when the engine wants an oil change from laying in the back of the bunk while someone else is driving it. -- The only thing that will satisfy that difference in sound when that engine starts sounding like everything in it is working harder and hammering a bit more internally --> IS AN OIL CHANGE after it gets to 28,000+ --- or 30,00+ miles on it.


Call me crazy but I am not tempting the fate of possible problems, and if i was someone who owned one of those newer common rail ISX's with the exploding fuel pumps,.. I would be even more paranoid,.. not less.

OIL IS CHEAP --- OVERHEAD CAMS ARE NOT!

OIL IS CHEAP -- EXPLODING ENGINE KILLING FUEL PUMPS ARE NOT.

OIL IS CHEAP -- AN INFRAME DUE TO EXCESS CARBON PACKING IS NOT.

OIL IS CHEAP --- REPLACE IT AT THE RECOMMENDED INTERVALS MENTIONED ON THIS FORUM AND YOU CANNOT GO WRONG BY DOING SO!!!

Rawze Wrote:Do the right thing,.. change your oil based on your fuel consumption instead of regular mileage intervals.

Here is what I would recommend to others based on what I have seen..

If your average fuel mileage every 10,000 miles is ...

less than 5 MG -- Change your oil every 8,000 miles or so.

5 - 6 MPG -- Change your oil every 10,000 - 12,000 miles or so.

6 - 7 MPG -- Change your oil every 12,000 - 15,000 miles or so.

7 - 8 MPG -- Change your oil every 15,000 - 18,000 miles or so.

8 - 9 MPG -- Change your oil every 18,000 - 22,000 miles or so.

above 9 MPG -- Change your oil every 22,000 - 28,000 miles or so.

These recommendations are based on more than just engine wear alone. They are based on getting the most engine life vs the cost of oil changes themselves, and the fact that soot and other deposits are going to keep building up in your engine more rapidly than you can flush them out. A bypass oil filter system can extend this, but not by the claims they are making. You would be good to get an extra 8,000 - 10,000 miles on your oil before having to change it anyways. That is my experience on it, and is what I tell others that ask about these types of systems, etc.

reference: http://rawze.com/forums/showthread.php?t...617#pid617