Ford Motorcraft Gold 50%, although the chart linked on the prior page of this thread doesn't show that. I suspect a similar arrangement exists for Ford Motorcraft Gold concentrate vs. Well, if you look at the link on the prior page of this thread, the difference in the spec number for Ford Motorcraft Orange concentrate and Ford Motorcraft Orange 50% is an additional numeral "2" at the end of the spec number for Motorcraft Orange 50%. In any case, I pay less than a dollar difference between the above two coolants locally, so it doesn't hurt to use the Motorcraft for now. I do wonder IF this has ANY bearing, or IF there is even a very slight formulation/additive difference between the Zerex DC and the Motorcraft Orange? (Or if they added that number just to sell more Motorcraft fluids?) I broke out my manual, and the Zerex Dex Cool PDS noted Ford spec matches it except for the number "2" on the end of the spec in the manual. To me the spec numbers mean more than anyone's verbal assessment, including someone working in a FLAPS. Check the PI sheets for the corresponding spec numbers. The Ford / Motorcraft spec number for Ford / MC Gold coolant appears on the info for Zerex G05 on the Valvoline web site. The Ford / MC orange coolant is DexCool, you'll see that spec number on the Zerex Dexcool orange coolant on the Valvoline product web site. IIRC, a member here has/does run G-05 in 1960s Chryslers.My wife's 2011 Mustang had Ford / Motorcraft orange as the factory fill, I replaced it last summer after 6 years service with CQ orange coolant, which was much less expensive especially with the use of AAP online discount codes. Telling people that "you can switch to this if you do a complete flush" is too much for the average car owner to comprehend at all. GM did not back spec pre-1995 models to Dexcool, and they still offer an AC Delco green coolant. The areas where coolant flows are all the same. The only things that changed on the engine were to delete EGR and change the upper (dry) intake manifold to composite. The cooling system on my truck is the same as the one on a 2001 Ranger 3.0. This would have been especially true for the OEMs while vehicles using green were still under warranty, which would have been into the mid 2000s.įord changed many models over to G-05 around 2001/2002 without any material changes to the cooling system. There is much more at risk here than topping off 5W30 with 5W20, and using 5W20 on later oil changes. Changing the spec might have implied that topping off green with G-05 is fine, when it may not be. My guess is because a full flush should be done before switching to a long life coolant. I would be very interested to hear from a Ford engineer on why they didn't back spec everything to Gold that was pre Dex Cool. I was speaking more about other vehicle makes that spec conventional green, not just Fords. More than likely, I will stick with Dex-cool in the Mustang unless it becomes a problem down the road.įor any application calling for conventional green you can safely upgrade to Motorcraft gold or Zerex G05 and take advantage of longer service life than conventional green. I put green antifreeze in it when I flushed it out the last time just because I don't trust the Dex-cool in this application. I don't know if the problems with this engine and the 5.0, and 4.3L are caused by the Dex-Cool or bad gasket design or both. I know that there have been three gasket revisions since this engine was developed. Truck currently has about 127,000 miles on it and has the second gasket design installed. I have had the intake manifold gaskets replaced three times, once under warranty and all of these were done within the first 100,000 miles. I have a 98 Chevy K1500 with the 5.7L that I bought new. Makes them now suitable for use in GM and Ford specing DexCool. I'd have confidence using DexCool in the new Ford systems calling for it.Īnd like it or not, the vast majority of universal AF's sold at auto parts stores and WM including store brands and brand names like Peak Long life and Prestone are Dexclones containing 2eha. Joining GM, Ford has decided to go to Dex across it's line up but not back spec older models, which indicates to me they have done their homework. While I understand some distrust of DexCool based on some past GM issues, I believe in systems now engineered for Dex and that include a pressurized recovery tank it will work just fine. Silicone based gaskets can be affected by 2eha which is what's referred to as a plasticizer. I will say though, the biggest possible issue with DexCool with 2eha being used in non dex spec'd systems is gasket incompatibility. I plan on using Dex-cool in this car while under warranty and then see if I can use anything else after.Īnd that is certainly your call.
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