With the shorter service interval, it means more work for them. I can think of one reason though why Toyota mechanics might like the Red LL over the SLL pink. So unless one just doesn't trust Toyota Motor Corp on SLL pink use, or simply prefers the old shorter service interval Red LL, no reason not to use SLL pink. Otherwise, the Toyota weep hole tsb shown appears to dispel most those anecdotal observation concerns. 'Perhaps' in much older Toyotas, say pre-1996, I might stick with the red out of extreme caution for heater core solder. When they went to SLL pink ingredients indicate they went to sebecic acid/(sebacate) as the OAT inhibitor.Īs noted, Toyota says SLL pink is backward compatible with the Red and can be used in it's place. It confirms LL Red does contain/use organic acid, specifically sodium benzoate as an OAT inhibitor. That information comes directly off a jug of LL Red and posted when the red LL v pink SLL topic was discussed in 2010, linked. I'm now thinking the red LLC formula doesn't have an organic acid.Įthylene Glycol(107-21-1),Diethylene Glycol(111-46-6) Water() Organic Acid Salt(532-32-1) Hydrated Inorganic Salt(). If you think about it, the longer life of an OAT/xHOAT does help with advertised TCO of a car and sustainability.Īn triazole or similar chemical is used to protect lead solder in an coolant - and the OATs have less of that. While it was the first Toyota product to use a plastic tank radiator, the radiator core and heater core were still lead soldered brass. Someone here said Dex-Cool doesn't play nice with lead solder and while Toyota did say the pink SLLC can be used to service older cars I did notice my hoses turning white and some radiator seepage with the pink stuff on a 1991 Lexus LS400. Highly doubt Toyota switched the core engine metals - but they did phase out lead solder in the mid-2000s, they started to use all aluminum radiators and heater cores. With your knowledge base, did Toyota change internal engine metals in 2002? In other words, why do you think they went from Red to Pink? What is in the post 2002 Toyota engines need the organic acids? Or do they? I'm merely trying to learn. This is the type of information I'm looking for. It’s that much cheaper and your car will be fine."Toyota Super Long Life Coolant” or similar high quality ethylene glycol based non-silicate, nonamine, non-nitrite and non-borate coolant with long-life hybrid organic acid technology It’s my opinion that yes, you should buy a gallon of this stuff. Super Tech’s 50/50 coolant meets and exceeds cooling and boiling point requirements for most modern engines, is priced well, and has some favorable reviews. According to 42 reviews on, Super-Tech’s 50/50 coolant has 4.5 stars out of 5. Not only does Peak and Prestone boast these standards, so does Super Tech’s coolant.īut don’t take my word for it. Any self-respecting coolant advertises ASTM D3306 and ASTM D4985 as standards for Glycol Base Engine Coolant for Automobile and Light-Duty Service and Standard Specification for Low Silicate Ethylene Glycol Base Engine Coolant for Heavy Duty Engines. Super Tech’s coolant does the same.įinally, the governing body for coolant is the American Society for Testing and Materials. Universal coolants use unique OAT-based corrosion packages with proprietary organic acids (such as carboxylate) to provide broad spectrum protection.īoth Prestone and Peak, two of the most popular brands of Coolant raise boiling points of water to 265F and lowers the boiling point to -34F. Coolant must interact well with these materials.Īccording to Walmart’s description for Super Tech 5050 Antifreeze coolant, this coolant is In addition, many components attached to engines are plastic. Most modern engines today don’t have iron blocks anymore and have lighter aluminum blocks. With that out of the way, most of the concerns people have with any value-brand coolant is if it’s safe for their engine’s and does it meet the heating and cooling requirements for your area (if you live in a hot or cold climate.) Coolant also has lubrication properties, keeping moving parts in your cooling system spinning efficiently, mostly the water pump and evident when you try to wash the stuff off your hands.
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