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Odchrist

Cummins 400 ISL Oil Capacity

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Buzz,

Welcome to the FMCA Forum.

Safest answer is to call Cummins tomorrow with your engine serial number.

Better than hoping the correct answer for another person's engine is the same as yours.

Cummins 800 343-7357

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I just acquired. an Alpine coach 2005 with a Cummins 400 ISL.

Does someone know the oil capacity?

Thanks,

Buzz Christensen

Buzz,

The ISL standard oil pan holds 7.3 gallons or 27.63 liters.

Engine idle oil pressure is 15 psi. Warm engine at highway speeds carries 40 - 55 PSI oil pressure.

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I also recommendation you call Cummins and provide them your engine serial number for an answer to your question. Also you may want to double check the answer with your Cummins engine owners manual.

I have the ISL engine and have been told by Cummins these engine's come with different oil pan capacities. After you get the correct information from Cummins I would suggest on you next oil change you do a dip stick calibration check. It is not uncommon for dip sticks to read incorrect oil levels. You do not want to over fill the engine with oil! It is better to be at the fill mark on the dip stick than to be over the full mark.

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