Alie&Jim's Carrilite Posted March 7, 2015 Report Share Posted March 7, 2015 On, actually in, a '98 Volvo with a Cummins M-11, is there a specific coolant required like HOAT compliant or ??? I know its green, but I cannot find any info in the paperwork (both 3" 3 ring binders) on anything specific. I do know that Cummins used HOAT coolant in a variety of their engines early on, and Volvo has always been in the forefront in the marine world for the engine coolant being friendly. Just wanting to change out the filter and need to top it off. Alie & Jim + 8 paws 2017 DRV Memphis BART- 1998 Volvo 610 Lil'ole 6cyl Cummins Link to comment Share on other sites More sharing options...
dascom Posted March 7, 2015 Report Share Posted March 7, 2015 Mine has Red ELC coolant. book says I need to change it every 750,000 miles. My guess is that means "extended life coolant", I reached that mileage last year and changed it out. The next time it will need changed I will be walking on golden roads. Yamaha V-Star2007 Kenworth T2000 tandem aircutterThermoKing TriPack2003 Holiday Rambler 36' Presidentialshort trips-88 Allegro on Astro Link to comment Share on other sites More sharing options...
RandyA Posted March 7, 2015 Report Share Posted March 7, 2015 HOAT (Hybrid Organic Additive (or Acid) Technology) antifreeze shouldn't be mixed with "green" diesel coolant. ASTM D-6210 or RP-329ASTM are typically the green coolant specified for wet sleeve diesel engine to prevent cavitation erosion (pitting) around the sleeves. "Green" indicates an ethylene glycol base. What is really important is the SCA (Supplemental Coolant Additives) in the base. These deplete over time. Check your SCA levels with a test strip kit and add SCA if below specified levels. Your new coolant filter will contain pellets of SCA that slowly dissolve to keep SCA levels up. Better yet drain your coolant system, recycle, flush with Calgon/water mix and refill with distilled water and Cummins 14603 approved diesel ELC (red) example here. This coolant does not require additional SCA's. If changing to diesel ELC be sure your new filter is empty and not one with conventional SCA pellets. Then you can pretty much forget worrying about liner pitting and SCA levels for the next half million miles.. Randy, Nancy and Oscar "The Great White" - 2004 Volvo VNL670, D12, 10-speed, converted to single axle pulling a Keystone Cambridge 5th wheel, 40', 4 slides and about 19,000# with empty tanks. ARS - WB4BZX, Electrical Engineer, Master Electrician, D.Ed., Professor Emeritus - Happily Retired! Link to comment Share on other sites More sharing options...
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