Oil capacity for Cummins ISC 330. Anyone know what is correct?

[Logthumper]

Purchased the 2007 Monaco Knight with Cummins 330 ISC on 8-31-07, miles was 742. When I winterized it today the mileage was 1642. Because the engine was built on 8 of 06 and the Monaco Mfg date was 1 of 07, I thought I would change the oil and filter so it would stand fresh while setting for the winter.

The oil was on the "full"� mark and when I drained the oil. Total amount of oil drained from the Filter and Pan totaled 20 Qts of old oil.

Now comes the ??????? Part. The Monaco Knight Owner's Manual shows the oil capacity at 19 Qts. I called Monaco Technical Support and they confirmed that 19 Qts is correct for pan and filter capacity.

I then called Cummins Customer Support and per the serial number of the engine they say the capacity of the pan is 20 Qts, the capacity of the filter is 4 Qts for a total of 24 Qts.

I pre-filled the filter with 4 Qts and refilled the pan with 15 Qts for a total of 19 Qts (per the Owners Manual), ran the engine to bring up "Oil Pressure"� than let it set for 1 hour to let the oil settle (I˜m in no hurry, just want it right). A check of the oil showed that it was 1 Qt short. So I added a Qt and it brought the oil level up to the "full"� mark. So now I'm back to the same amount of oil (20 Qts) that I drained from Oil filter and Pan.

So I guess I'm happy by going with the "full"� mark on the dipstick (and that I put back in exactly what I removed). -But- who/what do you believe?

[Les Stallings]

I assume you have started the engine to complete fill the oil filters and to check for leaks...

Cummins will certainly know the oil capacity of the engine. Variables would include how the chassis manufacturer located and routed the plumbing for the oil filter, oil cooler (if applicable), storage tank, etc.

In my case, I would think my chassis builder Roadmaster, would be a better source for total oil capacity.

Whatever it takes to get the oil level back to the full mark would be correct IMO.

[gizmo]

my 350 isc takes 20 quarts with filter change.

[Bubz]

I have an 06 Knight with the 330 ISC and I just finished changing the oil about two weeks ago. Mine took exactly 24 quarts with the filter; 20 in the pan and 4 in the filter.

[Logthumper]

Thanks for the replys. Everything I have checked with Cummins is 24 Qts.