You will probably be fine running the Peak stuff if you have to, but I seem to recall a few years ago I was able to purchase Pentosin/Pentofrost from Advance Auto Parts. That was a brand that I saw often on VW parts sites and it meets the standards for using it in the MKIV VW cooling systems, so I went with that.
Yes most certainly I always use Pentofrost/Pentosin VW-Specific Concentrated Coolants. Always have for every VW I have ever owned.
I ran the euro Peak without issue for about a year but I was bleeding coolant and in desperate need of the cooling system overhaul.
My car is currently filled with the Peak Euro Blue stuff, works fine, identical to the OE BMW formula anyway
I always use the OEM coolant that I pay an arm and a leg for from the dealership. For a few dollars it’s not something I want to chance in vehicles (especially my E46) with such sensitive cooling systems.
The correct coolant is Honda longlife which is blue. Someone has already put \"all vehicle\" green stuff in it, which will keep it cool just fine but not provide as much corrosion protection over the long term. The factory Honda coolant is designed to run for 120,000 miles; this stuff is good for maybe 30-50k before it should be changed.
the blue Subaru coolant is made specifically for Subaru's and generally prolongs the coolant systems/head gaskets.
Ran Motul motocool on 3 Street triples for years, no issues.
Last time I priced FL 22 at the Mazda dealer it was about the same as AutoZone I was surprised I thought it would be considerably more.
I wouldn't do it. Take this for what you will, but our local GM dealer was switching alot of cars back to regular Ethelyn glycol (green antifreeze) after they had too many warranty problems with Dex-cool (propylene glycol). Which included seal degradation mentioned above, erosion of plastic parts (including intake manifolds, waternecks, etc.), and clogging due to formation of brown sludge produced by the coolant. On top of that, I work in a parts store and I see alot of premature failure of waterpumps, radiators, and gaskets that seem very much related to the use of dex-cool.
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