Your Subaru Outbacks coolant, also called antifreeze, is mixed with water to prevent it from freezing in cold weather and to protect your Outback from overheating.
Genuine Subaru Cooling System Conditioner has been tested and approved for aluminum engines and radiators. Coolant/Antifreeze Extended Long Life Concentrate 1 Gallon. Whenever the coolant is changed, you must add Genuine Subaru Cooling System Conditioner. that require the replenishment of coolant. As a reminder, use of Genuine Subaru Long Life Coolant is mandatory on all repairs paid for by Subaru of America, Inc.
If an equivalent must be used, make sure it is a phosphate (non-amine) type. Coolant of other types may not provide the proper protection to aid against corrosion of aluminum parts. Genuine Subaru Long Life Coolant is a phosphate (non-amine) type and is specially formulated for all Subaru vehicles equipped with aluminum engines and radiators. When adding, replacing or servicing the cooling system always use Genuine Subaru Long Life Coolant. What aftermarket coolant can I use? This was detailed in the May 2005 issue of End Wrench which is no longer online, but paraphrased here.
#SUBARU SUPER COOLANT PEAK FREE#
1 gallon bottles." RRP $22 per 1 gallon.Īccording to a Subaru FAQ, as long as the coolant used in a Subaru is non-amine, free of silicates, then it *should* be safe to use: It contains an organic corrosion inhibitor instead of abrasive silicates for exellent corrosion protection. Performance under extreme operating conditions -34º to 228✯ĭesigned for optimum cooling performance, for Subaru's aluminum engines. RRP is $20 per 1 gallon.Įxtended life formulation 5 years/60,000 miles Honda's OEM coolant is silicate and borate free - specifically for those reasons. The main reason being that the Prestone stuff typically uses silicates and borates in the solution, two items which can simultaneously corrode and cause blockages in the Subaru cooling system. I've been doing some research on some OEM fluids and have found that the commonly available Prestone 50/50 mix is actually not that great for Subaru's aluminum engines/heads. So around the season change people tend to drain and refill their coolants.
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