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radroach · 12-12-2015, 10:42 PM

Something that I did perhaps 5000 miles ago, and didn't think much about until now, I topped off the coolant with Prestone antifreeze, and now I'm worried I might have to take it to the dealership for an expensive coolant flush.

Even though it's been a long time and the car is running fine (but with the coolant now more darkish green color), I've been wondering if there's any immediate concern to this. I've read some things from other subaru forums saying the Prestone formula won't interfere with with the Subaru Super Coolant, and the Prestone label says it can be mixed with any color antifreeze.

Thoughts?

12-12-2015, 10:42 PM	#1
radroach Senior Member Join Date: Feb 2013 Drives: car Location: usa Posts: 2,162 Thanks: 1,028 Thanked 867 Times in 530 Posts Mentioned: 35 Post(s) Tagged: 1 Thread(s)	Topped off coolant with Prestone Something that I did perhaps 5000 miles ago, and didn't think much about until now, I topped off the coolant with Prestone antifreeze, and now I'm worried I might have to take it to the dealership for an expensive coolant flush. Even though it's been a long time and the car is running fine (but with the coolant now more darkish green color), I've been wondering if there's any immediate concern to this. I've read some things from other subaru forums saying the Prestone formula won't interfere with with the Subaru Super Coolant, and the Prestone label says it can be mixed with any color antifreeze. Thoughts? Last edited by radroach; 12-13-2015 at 04:59 PM.