Cummins ISL400 oil capacity question
I figured I would go right to the source, in this case Cummins, to ask about oil capacity of my engine. I called numerous times, after spending a cumulative 90+ minutes on hold I gave up. I tried their chat and got an agent, who through chat really didn't seem that sure of himself. I gave him my engine serial number, which is a 2005 ISL 400, ser. number 46448341. He says the engine holds 28 quarts total, and he's insistent that the oil filter holds 4 quarts just in the filter. That's 28 quarts total with 4 included in the filter. That seems high to me, the filter seems way too small to hold a full gallon. Anyone have another resource to check on total capacity including filter? I used to have my repair shop change the oil with synthetic. His shop rate is now up to $190 per hour, and the charge for a complete oil lube and generator service is approaching $1K. That's crazy, I can easily do it myself.
I'm thinking about going to conventional oil. We only drive 3000 to 5000 miles a year, and I always end up dropping perfectly good synthetic oil out long before its mileage limits due to the year passing. Rotella T4 in a 15w40 weight here in the Houston heat should do just fine. We don't use the rig in cooler weather.
I'm hoping when I get under there I find that the oil pan has an upper and lower plug so that I have a way to efficiently handle that large a quantity of oil. Any thoughts you guys might have on any of this would be very welcome. I do my cars all the time, it's time I start doing the oil changes and fuel filter changes on my RV engine and gen as well.
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2005 Newmar Mountain Aire 4304 - 4 slides (sold to great folks and much missed)
2011 Jeep Liberty 4X4 towed (still my around town daily driver)
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