Quote:
Originally Posted by cravin
Guys, keep in mind that this was an emergency. I'm agreeing that the BMW coolant is the way to go for regular fluid checks. I had a cracked radiator, so getting something into it was more important than which brand. The Peak blue bottle is a 50/50 pre-mix, thus why it's the "next best thing". You guys are talking about distilled water as if that's something that a regular garage carries. I'd be curious as to whether Peak or a mineralized water like Poland Spring would do more damage over time.
My question to him was "when in a pinch like this, what's the next best anti-freeze to BMW" and he mentioned Peak blue bottle since it's the pre-mix.
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Well every grocery store and many gas stations do carry distilled. That being said, I would say that left in the system, a different coolant additive package could be much more damaging than some trace minerals in water since the concentrations would be much higher 50% vs a percent or less.
I do however agree that there needs to be a water-coolant mixture in the cooling system at all times. No one has suggested that running the engine low on coolant leading to overheating would be preferable to using a non-oem coolant.
Also, once your repair is finished, you may want to make sure they used all new BMW coolant and didn't reuse the coolant in the system.
