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I’m running 110k miles in my M40 X3. There was a coolant issue but other than that it’s been an excellent engine.
I use BMW coolant cause it's similar in price, so why not. Actuall,y a little cheaper cause my dealer does discounts
Pentosin Pentofrost
By “air intake reservoir tank”, I assume you mean it’s the coolant tank for the water-air charge cooler. We need to know what car to tell if the coolant is suitable. That “G30” on the front is the important bit.
I use the blue antifreeze (G11) that was specified for my 1987 16V. I am currently running 10W40 synthetic oil.
I use Pentofrost (Pentosin is the OEM supplier to Porsche). Our local NAPA carries it even.
Pentosin is one of my trusted brands. I would not hesitate to use it.
I used genuine bmw coolant as the price was around the same.
They called her back again to say after they started working on it, it's not the water pump, but a coolant leak at the cylinder head, at the head gasket, so what was originally a water pump, is now a head gasket job, 3-4 days.
330i, coolant repairs.
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We compare antifreeze across these categories:
In March 2026 on PartReview, antifreeze Pentosin were overall better than OEM BMW.
In March 2026 on PartReview, antifreeze Pentosin were overall more popular than OEM BMW.
By vote balance, antifreeze Pentosin surpassed OEM BMW:
By number of reviews, antifreeze Pentosin surpassed OEM BMW:
In March 2026, according to PartReview, antifreeze Pentosin and OEM BMW have not taken top places in car-specific ratings. You can help by adding your review about these manufacturers.
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