Mike Diesel Posted October 30, 2021 Report Share Posted October 30, 2021 Have a 2019 Aria 3601 with 5K miles on it, it is a Cummins® ISB-XT 6.7L Engine and was looking at the Coolant overflow bin and noticed the level was below the minimum line as denoted on the bin. Should the coolant level be checked via the overflow bin and if so does the engine need to be warm or cold or running when you check it. Second question is how do you add coolant, do you just add it to the overflow bin when engine is cold, any recommendations on type of coolant would be appreciated. There are instructions next to the coolant bin that are quite complicated but believe that is to remove and refill coolant versus topping it off. Appreciate your feedback. Quote Link to comment Share on other sites More sharing options...
Barbaraok Posted October 30, 2021 Report Share Posted October 30, 2021 What does your owner's manual say? You fill to whatever mark is indicated when cold (we have a sight glass so fill just until fluid visible). Is there are overflow tube coming out of the bin? If so, that may be what you use to fill. Quote Barb & Dave O'Keeffe 2002 Alpine 36 MDDS (Figment II), 2018 Ford C-Max HYBRID Blog: http://www.barbanddave.net SPK# 90761 FMCA #F337834 Link to comment Share on other sites More sharing options...
Kirk W Posted October 30, 2021 Report Share Posted October 30, 2021 (edited) The coolant reservoir is the proper place to check the coolant. Most engines have both a warm level and a cold lever marked on the reservoir. A diesel does require specific coolant. I keep a gallon of Cummins, Fleetgaurd premixed coolant to add as needed. You shouldn't need to add much. If you look in the owner's manual for the chassis, it should have a section that addresses adding coolant. Edited October 30, 2021 by Kirk W Quote Good travelin !...............KirkFull-time 11+ years...... Now seasonal travelers.Kirk & Pam's Great RV Adventure Link to comment Share on other sites More sharing options...
Mike Diesel Posted October 31, 2021 Author Report Share Posted October 31, 2021 21 hours ago, Barbaraok said: What does your owner's manual say? You fill to whatever mark is indicated when cold (we have a sight glass so fill just until fluid visible). Is there are overflow tube coming out of the bin? If so, that may be what you use to fill. 21 hours ago, Barbaraok said: What does your owner's manual say? You fill to whatever mark is indicated when cold (we have a sight glass so fill just until fluid visible). Is there are overflow tube coming out of the bin? If so, that may be what you use to fill. Thanks for the feedback... Quote Link to comment Share on other sites More sharing options...
Mike Diesel Posted October 31, 2021 Author Report Share Posted October 31, 2021 18 hours ago, Kirk W said: The coolant reservoir is the proper place to check the coolant. Most engines have both a warm level and a cold lever marked on the reservoir. A diesel does require specific coolant. I keep a gallon of Cummins, Fleetgaurd premixed coolant to add as needed. You shouldn't need to add much. If you look in the owner's manual for the chassis, it should have a section that addresses adding coolant. Thanks Kirk, will be retrieving the owners manual to confirm. Quote Link to comment Share on other sites More sharing options...
Ray,IN Posted October 31, 2021 Report Share Posted October 31, 2021 I always use pre-mix coolant to top off the overflow tank, and only when coolant is cold; unless the coolant level is so low allowing the engine to cool might suck air into the system. Quote 2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG retired;Good Sam Life member,FMCA ." And so, my fellow Americans: ask not what your country can do for you--ask what you can do for your country. John F. Kennedy 20 Jan 1961 Link to comment Share on other sites More sharing options...
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