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Old 02-03-2012, 09:46 PM   #1
NVsubaru
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Default Adding "Napa Kool" instead of oem subaru

I know there is strong feelings about using oem, but napa is all I can get out in the boonies. I'm using napa coolant, and using "napa kool" cooling system treatment until I can get the good stuff. Should I get this stuff out ASAP or should I be okay? I'd like some facts, but I'll take opinions, too...
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Old 02-04-2012, 12:35 AM   #2
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Are some coolants better than others...yes. If I were going to switch to a different coolant, I would flush out whatever I was currently using a refill the system with only the new stuff. It's really the mixing of different coolants and also the constant switching of coolants that is bad. Really, just pick a coolant and stick with it. Reason being that each time you switch coolant, you reset the passivation process in the cooling system. As for the additives, it is really hard for me to be convinced to put any additives into any automotive system. Just changing your coolant as you should, about every two years or so, would be enough to give the adequate cooling system protection.
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Old 02-04-2012, 05:25 AM   #3
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if it says "good for all makes and models" or something like that you should be fine.
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Old 02-04-2012, 08:47 AM   #4
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The universal coolants, Peak Global and Prestone All Makes/Models are good to use. I've used both for many years with no issues. Personally I'd stick with those instead of off-brands.
As for the additive, I've never used it and haven't had any problems. However if you do choose to use it I'd suggest not using anything other than the Subaru conditioner, as others may contain different materials that may not be safe in your cooling system. If you don't have a dealer nearby it can be ordered from one of the online parts vendors who sell OEM parts and supplies.
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Old 02-04-2012, 09:22 AM   #5
Jessekrs123
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I wouldn't take it out ASAP unless you begin to experience cooling issues at which point, as Mulder stated, the universal brand coolants are good, and certainly better than a store brand coolant.

I use Prestone in all 5 of the Subarus in my driveway/yard, without the special Subaru conditioner as well. And I top all of them off with water and never have a cooling issue with any of them. 2 of those Subarus have over 160,000 miles on them with no issues, they all run cool as cucumbers.
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Old 02-04-2012, 10:13 AM   #6
NVsubaru
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That's pretty much what I figured. As far as the napa kool, after doing more research, it's only a corrosion inhibitor, it doesn't have a stop-leak like the Subaru additive. I guess I'll have to get ahold of that next time around. One more question, I can't seem to get more than 6.5L of coolant in the motor. Does the 7L capacity in the manual include the half-or-so liter in the overflow tank? I might just need to take it out for some spirited driving to work the air out (of course bringing some water and checking the temps).
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Old 02-04-2012, 11:43 AM   #7
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Good advice given so far. You will NEVER get the owner's manual amount in the car as there's coolant hidden within the engine itself, so don't use that as a gauge of fullness. Fill it, leave the cap off, start the car with the heater on high, and let that bitch idle for a full 15 minutes.....as in 15 minutes....not "15 minutes", while it's running, keep adding water to top it off and squeeze the Jabeezus out of the top radiator hose to work out air bubbles. At the end of 15 minutes of filling/squeezing hoses, it should be good. If later it starts to overheat...you know you have some rogue air pockets and you need to repeat the 15 minute cycle.
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Old 02-04-2012, 07:17 PM   #8
NVsubaru
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Thanks for the advice. First damn time I've seen replies where people don't have sticks up their asses about using ONLY Subaru coolant. It seems to be mostly all the same these days, anyway. Cheers! Now on to the timing belts and tranny/diff fluid changes...not to mention the worst: a bad throwout bearing....
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Old 02-06-2012, 01:28 AM   #9
Uncle Scotty
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it can help to park it 'up hill' too
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