![]() ![]() My concern is that I think the ability exists to add SCA's (supplemenatry coolant additives) to refresh some antifreeze formulations when antifreeze gets old.say, spending $30 instead of $300 and avoiding replacement hassles with all the drain,refill, disposal issues. It IS supposedly important for anticavitation/corrosion in wet liner engines (series 53, I think).If this is true I am wasting time and money changing for an additive replenishment I don't even need. In addition, and I may be wrong about this, but I don't think nitrite (which I now test low in my "old" antifreeze), is even necessary for 71 series (dry liner? engines). I friggin refuse to spend $19/gal without knowing which antifreeze formulation offers the best protection, longest life, and ability to rejuvenate via addivives. The Valvoline Company Zerex G 05 Hybrid (HOAT) The Valvoline Company Zerex Extended Life Hybrid (HOAT) Shell Global Solutions Shell ROTELLA Ultra ELC OAT Shell Global Solutions Shell Fully Formulated Phosphate Free Antifreeze / Coolant Conventional Shell Global Solutions Shell HD Antifreeze / Coolant Conventional Shell Global Solutions Shell HD Premium N Antifreeze / Coolant Hybrid (HOAT) Shell Global Solutions Shell HD Premium Antifreeze / Coolant Hybrid (HOAT) ![]() Shell Global Solutions Shell HD Ultra ELC OAT Recochem STP Heavy Duty Diesel Antifreeze Coolant Conventional Recochem TURBOPOWER Heavy Duty Diesel Antifreeze Coolant Conventional Recochem STP Diesel Extended Life Antifreeze Coolant Hybrid (HOAT) Recochem TURBOPOWER Diesel Extended Life Antifreeze Coolant Hybrid (HOAT) FLEET CHARGE Fully Formulated Coolant Conventional FINAL CHARGE Global Extended Life Coolant OAT DDC does not warrant the performance of non-DDC products, registered or not.Ĭompany Name Product Name Inhibitor Technologyĭetroit Diesel Corporation Power Cool Conventionalĭetroit Diesel Corporation Power Cool Plus Organic AcidīP Lubricants Castrol Heavy Duty Coolant ConventionalīP Lubricants Castrol Heavy Duty Extended Life Coolant / Antifreeze OATĬhevron Products Company Texaco Extended Life Coolant / Antifreeze - Nitrite Free OATĬhevron Products Company DELO Extended Life Coolant / Antifreeze - Nitrite Free OATĬoquilub Coquilub 575 Heavy Duty ELC Antifreeze/ Coolant Hybrid (HOAT)ĮxxonMobil Mobil Heavy Duty Coolant ConventionalĮxxonMobil Mobil Delvac Extended Life Coolant OAT Registration for DDC Power Cool Engine Coolant Specification 93K217 does not waive the liability of the manufacturer or the marketer. However, it is still the responsibility of the manufacturer or marketer to ensure satisfactory performance of its products in all aspects at all times. Here's the source for currently approved DD coolants: NOTE THAT DIFFERENT FORMULATIONS ARE NOT TO BE MIXED!!!!!!!!!!!!!!!ĭDC Power Cool 93K217 Approved Coolants ListĭISCLAIMER: Product registration means the manufacturer or marketer has faithfully collected information pertinent to the requirements of the specification and with the full intention to conform to the specification. Likely it would be part of a Supplementary Coolant Additive (SCA). But if it is required, and any nitrite additive becomes depleted, can it be purchased at retail and added if the antifreeze otherwise tests ok? The above spec makes it sound like OAT NOAT lasts longer?įinally, anybody know if nitrite is even necessary in 71 series?.I think it's required for 53 series, not necessarily 71 series, for cavitation corrosion prevention?. I know any formulation should be phosphate and silicate free, to prevent drop out, but I have never seen anything regarding pros and cons among different formulations. Is it smart top stick with a conventional formulation if that's what's been used before.is mixing a small amount of old versus new due to insufficient flushing a problem? When replacing/changing 71 series engine coolant/antifreeze, do any of you have strong opinions about one formulation over another? Among DD approved antifreeze types are conventional formulations, extended life, OAT,NOAT,HOAT, and probably a few others I can't recall at the moment. PH should be about, 8 or 9, which is alkaline (never below 7.5 which would be acid.) Test strips are available. The typical three tests for antifreeze/coolant are PH, freeze point and nitrite level. My nitrite level in my 71 series antifreeze tests low currently.It's a conventional fomulation which meets heavy duty DD spec TMC-RP 329.Ĭurrent Detroit Diesel coolant specs may be seen at (but 53 series and 71 series are no longer listed): Don't not generalize any discussion results here to other engine manufacturers////// ![]()
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