Antifreeze Pentosin or OEM BMW

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.